17 scales 12" long. Cursor and center slide bar move smoothly. No writing on slide rule or case. Front Scale K, A [ B, ST, T, S, C ] D, DI Back Scale DF [ CF, CIF, CI, C ] D, DI, L

 

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 auction is for a Lutz lettering set,no. 18. It comes with original box. The ink is probably not any good. Looks like a part in the front spot may be missing. USPS shipping can be calculated on th

 

K&E Slide Rule 4081 leather holder and booklet. In good condition. See all pics and ask questions before bidding if you are unsure of something. AS IS no returns. NY residents must pay 8% sales ta

 

i000000 EARLY 1900'S CALUMET & HECLA COPPER MINING ROCK HOUSE POSTCARD CALUMET MICHIGAN Click to Enlarge Click to Enlarge Description: Up for auction is an early postcard, showing the Rock House o

 

W Horwood & Sons Vintage Maths instruments set Description Set of Vintage mathematical instruments in leather bound case Made by W Horwood & Sons of Clapton, London, E5 Comprehensive set of di

 

New in it's box, this STAR Circular Slide Rule No. 120 is about 4.5" in diameter. It has many scales on each side, and on the front says, "Scientific Instruments Co. 1962 No. 120 Professional Slide Ru

 

millstone31 Store Vintage Faux Tortoiseshell Key Fob with Magnifying Glass and Compass Circa 1910 On offer here is a Vintage Faux Tortoiseshell Key Chain Fob with fold out Magnifying Glass and Compass

 

Early Dr. I. Douglas Dentist Romeo MI Pocket Mirror This early pocket mirror measures 1 1/2" in diameter. The mirror is from the office of dentist Dr. I. Douglas in Romeo, Michigan. The glass is scrat

 

These vintage microscope objective cans came from an estate here in eastern Connecticut * Made of solid brass with black enamel on the outside * Ten measure 15/16" in diameter by 1-11/16" tall * Five