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brown and sharpe universal dividing head

EUC VERTEX YIYEN. by Harold_V Mon Nov 04, 2019 4:28 pm, Post Visit our eBay Store! of 1 degree is (200x16x50)/360=444.44444444. 18 mm. List your items fast and easy and manage your active items. When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Thanks for looking! If you dont see what you need, we find it! All of the manuals are printed on thick white paper to withstand shop wear and tear. About 10- 1/2" x 9- 1/4" x 7- 3/4" Please ask all the questions you want BEFORE you purchase! 1/4" ANC / UNC has a core diameter of 0.1887" which is in reasonable agreement with your 0.19" measurement and is 20 TPI. We carry a complete line of products for the metal mechanic enthusiast. 191. We ship Wednesday to Friday. We can provide special preparation, such as skidding or crating at an additional charge. Suitable for milling machine, clamp bed or other special machinery for quick and easy division. If so. Inventory is on hand and ready to ship. 1:40 ratio. W/ 5" CHUCK. Lathe chuck model: K11 80mm 3 jaws self-centering chuck. 1Set Rotary 4th axis K11-100mm 3 Jaw chuck include stepper motor. Here at Small Tools Inc. Our highly skilled staff fully runs and tests the machines for sale to ensure you get a quality product. : improvements and tooling for my mini-lathe. Engraving machine fourth axis (A axis. Unless item is not as described. Why Choose VEVOR?. VEVOR BS-0 Semi 5" Indexing Dividing Head 3-Jaw Chuck Tailstock For CNC Milling, BS-0 Semi 5" Indexing Spiral Dividing Head 3-Jaw Chuck Tailstock For CNC Milling, VEVOR Indexing Dividing Head 6" 3 Jaw Chuck & Tailstock for CNC Milling Machine, Indexing Dividing Head BS-1 6" 3 Jaw Chuck & Tailstock for CNC Milling Machine, Semi Universal Dividing Head with 5" 3 Jaw Chuck, L&W Indexing Dividing Head Indexing Head with 8" 4 jaw Union chuck, L-W CHUCK Co. Brown and sharp were one of the best known American manufacturers of first class machine tools,they invented the horizontal mill/universal mill as we know it around 1870,principally to produce twist drills by spirall milling they were also the principle developer of the cylindrical grinder,the turret or screw automatic lathes plus the whole range of precision hand tools, they had for a time a . Disk #7 has pin holes 99, 89, 79, 69, 59, & 48. This model dividing head is capable of being gear driven via a conventional or low reduction gear attachment from the lead screw of standard .250rev.table. Mine has non. Dividing Head with 5 South Bend chuck.Shipping. We get this. Thanks for posting . L Oreal Age Perfect Mascara Brown, ELLIS PRECISION INDEXING DIVIDING HEAD w/ 8" FOUR-JAW CHUCK, aims U.S.A! T12-942 OLED Digital Soldering Statio. Thread On Back Plate: 1 1/2" x 8 TPI. 7, is common on the Continent. Dividing Head and tailstock with 6 inch? This chuck fits the Brown and Sharpe dividing head that I have listed in a separate auction. Post (3) Dividing Plates cover any divisions. We accept Visa. Easy indexing of all numbers from 2 to 50 and many numbers from 52 of 380. It has a nice 6" 3 jaw US made chuck mounted on it. Secondly there is the Arc Euro Trade style for this style of Very Truly Yours, Small Tools Inc. 1(800) 821-2674, 10" Kearney & Trecker Dividing Head with 6" Pratt Burnerd 6-Jaw Chuck, Order No 10DVH27, Mfg Kearney& Trecker, Model NA, Maximum Swing 10 in. Feel free to email us at DISCOUNTMACHINE@AOL.COM. A rule may appear, in the photographs for size reference only and is not part of this sale. You can email us anytime. can complete BS-2A 2,3,4,6,8,12,24 division indexing. MAX SPEED 3000. SEMI-UNIVERSAL INDEX CENTER B&S TYPE N0.0,N0.1(head) Unit:mm/in. 10 Tool & Cutter Grinder Operation Manual: 63: Backner, Brian: 09/30/2018: 1942: Grinder: Brown and Sharpe No. Apx 6 1/2" wide mount pattern. from previous use. The chuck is a 3 jaw Crown chuck not wonderful but it fits. Up for auction one Brown and Sharpe Universal Dividing Head with matching tailstock. Suitable for milling machine, clamp bed or other special machinery for quick and easy division. A phone number is required for the smoothly delivery of your goods! To set it at an angle, a rack and pinion are used. Shipping Buyer pays shipping. legendary whitetails promo code 2022 jeep jk exhaust manifold leak brown and sharpe universal dividing head. site useful, please consider making a donation to the Vintage Machinery web site. Brown & Sharpe V-Grove Magnetic Chuck. 3 Dividing Plates. 1pc Rotary Axis. No charge is incurred for loading at our warehouse. Comes exactly as pictured. : improvements and tooling for my bench grinder. HMI Touch Screen. Vextex Dividing Head Bs2 Complete With 160mm Chuck And Accessories, Paper Work. : highlighting of typedefs, #defines, enumerated names etc in Vim. 108.55 PCD. If you are able to. If you would like to inspect this item please contact us to make arrangements. This website is free, but costs me money to run. and BS-2 dividing heads. BS-2 Precision Dividing Head. Index plate with following divisions; 30.41,43,48,51,57,69,81,91,99,111. All offers will be considered. Brown & Sharpe Dividing Head ID Hello, Please see attached pdf photos and layout of a B&S dividing head I have and am trying to identify a model number. David. Shipping is going to cost $25-$35 and will include insurance and signature confirmation. Not familiar with the model you have, but here are some videos of restoring B&S dividing heads. 3 1/4" Radius and 6 1/2" Swing, 1 plate W-33-31-29 27-23-21 divisions. The stuck knob turns a spur gear which turns a nut on the eccentric shaft that locks said shaft from turning (the gear pair explains why clockwise turning loosens it). Please contact Robin at 860-828-3541 with any questions. Why Choose VEVOR?. This will be crated for safety. Check out my! Cushman Hartford 5" Super Spacer Indexing Dividing Head. I believe this to be an OLD Brown Sharpe Clone. 3 Jaw chuck; With center. 1) 60TH, 1) 80TH, 2) 50TH, 2) 45TH, 1) 44TH, 1) 64TH, 1) 65TH(ITEMS SOLD INDIVIDUALLY), Yuasa 550-031 Dividing Head Indexing 10" Semi-Universal With 6.5" Diameter Chuck. The dividing head is marked"Brown and Sharpe MFG. Dividing Head. 6.Accurate precision.Little backlash,fine appearance and strong structure so can assure smooth rotation. Hole Through Spindle: 0.709". Divisions: Up to 400. Machinists tools and other unique items. And check out our! IT HAS A 6" 3-JAW CHUCK. I will not falsify shipping documents. 3 Dividing Plates. I Got an unbelievable deal on it, a whopping 47 buckaroos. Rusty, As Photo Since taking the original photo we have now found the tailstock. Might anyone have an isometric drawing of the 10 dividing head? 1/4" ANC / UNC has a core diameter of 0.1887" which is in reasonable agreement with your 0.19" measurement and is 20 TPI. Spiral machining capability. Please ask any questions and I will answer them. Brown and Sharpe indexing heads include a set of 3 indexing plates. If paid by check. Need cleaning. Most items being transported via common carrier will need skidding or crating. I may add that in the future - let me know if this would be of use to you. ELLIS PRECISION INDEXING DIVIDING HEAD w/ 8" FOUR-JAW CHUCK U.S.A! Swing: 7-7/8". The 24 quick-dividing holes can complete 2, 3, 4, 6, 8, 12, 24 division indexing. U.S.A! LW CHUCK UNIVERSAL DIVIDING HEAD. Thanks for looking! 9 20 36 Semi-universal dividing head(tail stock) A1 B1 H1 h a1 b1 g1 191 80 137 128 150 106 16 Holes Numbers of the dividing plate(worm gear reduction ratio 1:40. Moneybookers www.moneybookers.com 3.the customers want use a Credit Card or Debit Card. Dividing Plates (3 plates Total). This chuck was lightly used and is in perfect working order. : some information about my metalworking workshop. 20, 19, 18, 17, 16, & 15. Letters were .050 tall. chuck size:4.921". 3 Dividing Plates. Find the best wedding dress deals near you. Fools talk because they have to say something. Need cleaning. The tailstock is serial number . I suspect it will need to go into a press but I don't want to try it until I am sure I haven't missed a pin or . Rotational Axis, CNC dividing head). : metalworking-related stuff that doesn't fit elsewhere. Any info would be appreciated. Sims 4 Strangerville Cd Keys, Post by . MasterCard and E-Check on PayPal.com Illinois resident adds 8% sales tax. Jamesframes Posts: 3 Joined: Thu Mar 28, 2019 11:02 pm. Please see photos, for details and condition. Please check my other auctions of precision watchmakers. carriers fee, packaging materials, 10" Semi-Universal Dividing Head Set Vertex # BS-1 ~ Hole through the spindle is 0.787". a little old, but not that old. Gears, anything else you may needing precision stepping. You may ask for freight cost before buying tools. If you purchase multiple items from us. 550.00 Shipping: 30.00. The centre is clamped firmly by three nuts. some numbers on it. Monday thru Friday, 8am- 5pm, at 860.828.3541. Phone: 1-630-443-3244 Email: DISCOUNTMACHINE@AOL.COM PAYMENT: We accept VISA. Dividing heads, indexing jigs, bench centers, etc. No charge is incurred for loading at our warehouse. This tool can be used to work out the best plate and number of holes to use on a dividing head. Adobe Acrobat Reader installed on your computer. Might be a good idea to ascertain the hand of the thread in question. by Jamesframes Mon Nov 04, 2019 4:22 pm, Post 4th axis pulse equivalent SETUP The replace algorithm of X or Y Axis Digital Readout& Linear Scale. Dividing Head and tailstock with Enco 12 inch 4 jaw chuck(chuck is missing one of the jaw screws but otherwise good condition- screw is easily and affordably attainable) Cincinnati- I believe 10 inch? Thank you for looking. feel free to contact. Warranties are offered by the manufacturer and will be honored by the manufacturer. plate(worm gear reduction ratio 1:40. Model# E 617. We wait for the check to clear. Buyer may arrange shipping, or contact me for a freight quote. BOTTOM HAS BRIDGEPORT LOCATING DOGS ON THE DIVIDER AND TAILSTOCK. 1pc Rotary Axis. 10" Power Take-Off Mechanism This operates from the left hand side of the table. CO. Providence . 5-1/2" to 6-1/4" CL Range. The phone number to my local UPS store is(856)464-2100 if you want to get an estimate before bidding. 15. Donations can be made through Up for auction is a used angle dividing head. Wedding dresses under $500. 415. Additional Cost& Weight to Ship via Common Carrier: Rough Crate: $75.00 Additional Weight: 40 lbs. The plate has 24 equally spaced holes. indirect dividing. I accept payments through paypal and other methods. Photos are of the actual unit for sale. We'll be happy to answer you. Base to Center: 5-1/2" Overall Dimensions: 13" x 11" x 9" tall. Chuck model: K11 100mm 3 jaws self-centering lathe chuck. Please contact us with any questions you may have. MasterCard, American Express, Discover and Debit. P lease visit our website. Engraving machine fourth axis (A axis, Rotational Axis, CNC dividing head) gapless harmonic reducer gearbox. ~ The swivel head can be locked at any angle from 10 degrees below horizontal to 90 degrees vertical allowing for a precision fit to the base assuring smooth rotation. They. Check my feedback and bid with confidence! Check out the photos! Here you will find a lot of useful info on dividing heads: I know this thread is. Mine has two additional "hole plates" (total three) which I think is standard, at least in my size. Size of Super Spacer. making a small donation Specifications Semi-universal dividing head(head stock) Unit: mm A B H h a b g Center taper Diameter of spindle hole N.W(kg) 293 156 220 128 207 114 16 No. It is a quality piece.The item "DIVIDING HEAD BY BROWN AND SHARPE PERFECT FOR ATLAS, BENCHMASTER, BURKE MILLS" is in sale since Thursday, April 09, 2015. Stepper Motor Drive System. 1/4" ANC / UNC has a core diameter of 0.1887" which is in reasonable agreement with your 0.19" measurement and is 20 TPI. THREW HOLE 30MM. Very clean nice unit here!! VintageMachinery.org 6 x 7-3/8 base with 5/8 key. Victoria 3.1/2" Centre Height Dividing Head for Milling Machine. Small items are shipped via UPS, FedEx or USPS, Monday thru Friday and will ship within 24 hours of cleared funds. At David's Bridal shop we have gowns for any size budget. No additional items or accessories are included. ~ Spindle Taper is MT3. When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. PAYMENT: We accept VISA. I've had it for several years and planed on using it for design work when making custom bells. Very Truly Yours, Small Tools Inc. 1(800) 821-2674, Angle Dividing Divider Head & Tailstock Lathe Parts. Free shipping to the lower 48 United States United States postal service flat rate shipping brown and sharpe type dividing head Chinese meaning, brown and sharpe type dividing headbrown and sharpe type dividing headbrown and sharpe type dividing headtranslation, pronunciation, synonyms and example sentences are . BS-0 DIVIDING HEAD SET W 5" CHUCK & TAILSTOCK FOR MILLING MACHINE FREE SHIPPING! Troyke BH12 12" Rotary Table Dividing HeadI can box and ship this. 10" Max Chuck L-W Chuck. Converts any ordinary milling machine or tool grinder into a universal machine. Two taper pins are used to adjust the centre in line with the headstock centre. If you find the information on this web 0, 1, & 2 Dividing Head - Operating Instructions & Parts: Manufacturer: Brown & Sharpe Mfg. Shippment will be made the same day as your payment is received and an UPS tracking number will be email to you. : improvements and tooling for my Harrison M250. gives specifications of each type of Cincinnati dividing head in detail. or sending me a message to let me know what you liked or found useful. There is a $20 loading charge on freight shipments. Dog Driver. 40 taper spindle, no draw bar. at Fixed Prices If you need to speak to a sales person feel free to call. Dont think ill ever need em anyways but would be heck of a project to make. Co., Universal Milling Machines New York State Business Directory, 1867, pg. Weight: 200 bls. The dividing head is marked"Brown and Sharpe MFG. Thank you. ISLANDS INCLUDING NORTHERN IRELAND IS AN ADDITIONAL 5 SEE OUR OTHER 37 00 OTHER ENGINEERING TOOLS IN OUR EBAY SHOP Be sure to add me to your favourites list! Semi-Universal Dividing Head is a simple Index Center and can be used for direct and indirect dividing. Or I may be mailing manuals, and can't hear the phone. DIVIDING HEAD, CAN DIVIDE IN ANY ANGLE BY DIRECT.INDIRECT,THE RATIO BETWEEN THE WORM GEAR IS 40-1.HAS HARDENED AND GROUND SPINDLE,THE SWIVEL HEAD CAN BE LOCKED AT ANY ANGLE FROM 10 DEGREES BELOW HORIZONTAL TO 90 DEGREES VERTICAL POSITION.HAS THREADED SPINDLE NOSE TO ACCOMODATE BACK PLATE,SO CHUCK CAN BE EASILY FITTED,HAS 3 DIVIDING PLATES,2,3,4,6,8,12,24,EASY INDEXING OF ALL NUMBERS FROM 2-50 AND MANY NUMBERS FROM 52-380,UNIT IS VERY ACCURATE A QUALITY UNIT. Monday thru Friday, 8am- 5pm, at(860) 828.3541. Spindle Motor. Dividing plate A,B,C. CHUCK DIVIDING HEAD TAIL STOCK FACE LATHE MILLING Cnc ??? Be specific about your needs in order to get an accurate quote. Please be sure all of your questions are answered before you bid! Here is the description: Gulledge Machine Works Cushman Chuck Co. DH-465 5 inch 3 Jaw 3505-564 This unit appears undamaged. Powered by The free listing tool. Accessory plates provide indirect dividing in any number from 2 to 50 and from 52 to 380 except prime numbers and certain other numbers. . I dont have anything to test it on or enough knowledge of it to test. Full Time Shift $17.00 / Hour. 2 heads. Brown & Sharpe Mfg. 95MM LOCATING RECESS. Be specific about your needs in order to get an accurate quote. Buyer to collect or we will strap to pallet at your cost. The seller is driccoboni and is located in Astoria, New York. Swing: 9-1/4" Center Height: 5-1/4" Headstock Taper: 10 B&S. Features threaded spindle nose and 24 hole dividing plate with easy conversion to fast, direct indexing on numbers 2, 3. 09-01-2013, 11:53 PM. 1867 Text Ad-Brown & Sharpe Mfg. Tap Drill Sizes Dividing Head Calculator Dividing Head Calculator This tool can be used to work out the best plate and number of holes to use on a dividing head. Please ask any questions and I will answer them. If you desperately want this shipped. Each plate contains 6 rows of holes. B: 21-2327-29-31-33, C: 37-39-41-43-47-49, All number from 1-50, All even numbers from 50-100, Many others from 50-400, Can be easily Adjusted to any angle between +10 to 90 degrees from a horizontal position, Threading back plate for mounting lathe chuck(back plate is plane back and it requires drilling& tapping 3 or 4 mounting holes depending on the lathe chuck and turning a shoulder for the recess of the lathe chuck) Center and driving dog, 3 Dividing Plates, Head Stock, Tail Stock, All Available to Ship NOW! Thanks. My manuals are not photocopies. Semi-Universal Dividing Head. quickly split, with the honeycomb plate can also be divided into two parts ranging from 2-380. The Index plate with a circle of holes manufactured by the brown and sharp company are: Plate No 1- 15,16,17,18,19,20 2- 21,23,27,29,31,33 . Phone: 1-630-443-3244 Email: DISCOUNTMACHINE@AOL.COM SHIPPING: UPS Ground Buyer pays ACTUAL UPS shipping& insurance. This is our semi-universal dividing head, one of machine tool accessories for dividing workpieces into equal partitions. Powered by, RICHMOND PRECISION 5" UNIVERSAL DIVIDING HEAD INSTRUCTION BOOKLET 1942 #RR494, This sale is for ONE previously owned COPY(Original not photocopy) of: Midgley& Sutcliffe Ltd. RICHMOND PRECISION 5" UNIVERSAL DIVIDING HEAD INSTRUCTION BOOKLET. Allowing the the head stock to be used as a dividing head. 1 907 soldering handle 4 core. Brown & Sharpe 10" Dividing head assembly diagram? more Enco Angle Dividing Indexing Head $ 250.00 Buy It Now $50.00 Shipping Condition: Used Location: Licking, United States Removed from a closed firearms manufacturer. Machining Centers & Milling Machines Product details. Our refund is limited to the amount you paid for the item, excluding any charges for shipping, crating or insurance. Spindle Center. This diving head is subject to prior sale in our brick-and-mortar building unless otherwise noted. Specially designed for the metal mechanic hobbyist. 450.00. Still has a very large capacity with the two piece jaws. ~~~~~ Ask all the questions you want; we'll be happy to answer you usually within a couple of hours! 3 1/4" Radius and 6 1/2" Swing, 1 plate W-33-31-29 27-23-21 divisions. No dividing plate with the unit. WALTER Tilting Universal Spiral Dividing Head W/ 8 3-Jaw Chuck #ZST4-A (23J4), BS-0 Semi 5" Indexing Dividing Spiral Head 3-Jaw Chuck Tailstock CNC Milling, VEVOR BS0 5" Dividing Head Indexing Head Universal Tailstock Drilling Milling, Vertex CS-6 Super Spacer Indexing Head 6, SHARS BS-0 DIVIDING HEAD PLATES MILLING SET TAIL HEAD STOCK NEW R], Indexing Dividing Head With 8 Bison 3 Jaw Chuck Tailstock Extra Jaws + 3Plates, SHARS PRECISON BS-2 UNIVERSAL DIVIDING HEAD MILLING MACHINIST SET ], Vintage Brown & Sharpe 10 Indexing Dividing Head, SHARS PRECISON BS-1 SEMI UNIVERSAL DIVIDING HEAD MILLING MACHINIST SET ], DIVIDING HEAD 2-7/16 TAILSTOCK 1 RAM PROJECTION, Indexing Dividing Head 5" 3 Jaw Chuck & Tailstock for CNC Milling Machine, 5 inch BS-0 Dividing Head Jaw Chuck and Tailstock Set for CNC Milling Machine, L-W Chuck Co. The adjustable 4" chuck was made by Buck. Swing: 10". OLD VINTAGE GULLEDGE DIVIDING HEAD DH-465 CUSHMAN CHUCK 5"/3 JAW 3505-564 $0SHIP, Thanks for looking! 1 Set 50:1 5th rotary axis double support (RTM17-A50-C50 ). Stop in to our warehouse. Dog Driver. I make every reasonable effort to ensure my buyers are satisfied! Hello, Please see attached pdf photos and layout of a B&S dividing head I have and am trying to identify a model number. Dividing Head. ). Packaging and shipping costs are the buyer's responsibility. 3 Dividing plates. for milling machine, clamp bed or other special machinery for quick and easy division. When you receive your order Your items will be shipped in 2-3 working days after your paym, CNC Engraving Machine 4th Axis CNC Dividing Head Ratio 3:1 with 4 Jaw 100mm Lathe Chuck NEMA34 Stepper Motor Chuck model: K12 100mm 4 jaws self-centering. Tn. All shipping and handling fees will not be returned in any case. OR WE'LL BUY IT BACK! Chuck type : K11 80mm 3 jaw centering chuck. : a selection of on-line calculators related to metalworking. Our Inventory# 8432 Information is Preliminary. ELLIS PRECISION INDEXING DIVIDING HEAD w/ 8" FOUR-JAW CHUCK U.S.A! LOOKS HARDLY U SED. Our refund is limited to the amount you paid for the item, excluding any charges for shipping, crating or insurance. Before setting up gears make sure you have disengaged the main spindle from the worm drive. Dividing plates can either have rings of holes on one side only. more R. I. U.S.A. and the serial number is"1928" The dividing head specifications are as follows. B - Use of dividing plates. Stepper motor: 2phase nema23 stepper motor. Check. It will be your perfect assistant to machine the flutes of a milling cutter, cut the teeth of a gear, curved mill slots, or drill a. bolt hole circle around the circumference of a part. Spindle Center. When you are using it for straight indexing, the pin is lined up with the hole nearest to it in the index plate you are using. Due to statutory changes this year, beginning in 2023, there will be new educational . Minnesota buyers will be charged sales tax. Gearbox & Speed Reducer. : a browser plug-in to allow you to blacklist bad ebay sellers. Powered by, EXCEPTIONAL YUASA 10" UNIVERSAL SPIRAL MILLING DIVIDING HEAD $7000.00 NEW, YUASA 10" UNIVERSAL SPIRAL MILLING DIVIDING HEAD YUASA#550-032 UNIVERSAL B&S TYPE#2 HAS BRACKETS AND GEAR TRAIN FOR SPIRAL MILLING. Dog Driver. Threading back plate for mounting chuck (back plate is plane back and it requires drilling & tapping 3 or 4 mounting holes depending. Help on Brown and Sharpe Universal No 2 Dividing Head. Wedding dresses over $1000. All Available to Ship NOW! Payment due within seven days of purchase. All items are sold"as is" with no warranty of performance or suitability.Proper and safe use of any ite, Huge Lot Cincinnati Mill tool - Universal head, dividing head, and much more, All this tooling goes to a#2 Cincinnati horizontal mill and came from a small family owned machine shop in the small town of Humbolt. WITH UNIVERSAL ADJUSTABLE TAILSTOCK. Minimum of at least: 1 Hour of Cultural Competency, and. Wireless Spotlights Outdoor, If you'd like me to add your 21- 23-27-29-31-33. The plates are marked #1, #2 and #3, or "A", "B" and "C". Here at Small Tools Inc. Our highly skilled staff fully runs and tests the machines for sale to ensure you get a quality product. Post Code is required! Larger items will be shipped via flatbed truck or common carrier and buyer is responsible for arranging. gearbox. Rigid and precision design. It can be used for direct and. We wait for the check to clear. No Local pickup for auction customers. Direct mounted index plate has24 divisions. RcmdId ViewItemDescV4,RlogId p4%60bo7%60jtb9%3Fuk.rp*3A%3Cd%3Ff6%3E-147c361df41-0x10b-, Hofmann Universal Precision Dividing & Indexing Head. Equipped With: Indirect Dividing Plate Direct Indexing Plate Power Take-Off Tailstock Centers All Items Subject to Prior Sale Be Sure to Verify Specs& Condition Prior to Purchasing Contact We are available to answer your calls and inquires. The dividing head is marked"Brown and Sharpe MFG. and install the dividing head. Standard US countersunk machine screw head for 1/4" is 0.507" diameter but, as I'm sure you have already found elsewhere normal practice for this sort of equipment was to use smaller diameter heads with .

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