8” Circular Binary Trig Slide Rule Copyrights 1931 / 1940 · I guess the © 1931 slide rule was eventually mated with the © 1940 slide rule to get this one. · Printed area has 8” diameter. Full

 

Normal 0 false false false MicrosoftInternetExplorer4 Vintage Keuffel and Esser Co. Slide Ruler #4181-1 w.original leather case, box and manual - ca. early 50’sThis is a Keuffel and Esser engineer�

 

THIS IS A VINTAGE PAIR OF OPTICIANS EYE TEST SPECTACLE FRAMES,THEY ARE MARKED THE CROYDONIAN,THEY LOOK TO BE COMPLETE AND WORKING BUT HAVE SOME WEAR. IF YOU HAVE ANY QUESTIONS PLEASE EMAIL ME,I DO COM

 

Brass/ Steel 9 in. Proportional Divider In Wood Box This New Reproduction is a Brass/ Steel 9 in. Proportional Divider, reproduction crafted in the style of a century ago with NICE HARDWOOD BOX ( may

 

This listing is for 2 VINTAGE TRIGONOMETRY TABLES BOOKLETS , an ITW & EX-CELL-O Corp. The 6 1/2" by 3" booklets are both in very good used condition and both have slight wear. The EX-CELL-O book h

 

This Drafting Table is dated Nov 10th, 1872 from the WASHBURN MACHINE SHOP Institute of Industrial SCIENCE. 

 

Brass tag says "GELSENKIRCHEN", Brass Sledgehammer and pick on 6 1/4"diameter black 5/8 thick material that is embossed to look like coal.there is a brass pin that comes out the center to hang the bra

 

item jj40 this auction is for a mcalister fuel co pin. its seems to be very old it measures 2 3/8" by 1" if any questions just email me thanks.

 

Item to be paid in 3 days. Thanks for the looks, Jim Posted with the eBay Android app Posted with eBay Mobile Posted with eBay Mobile

 

Offered here without reserve is this truly rare spiked tommy. While normally associated with mining, the unique gimbaled assembly (in fully working order so that the candle is unaffected by the angle