This slide rule is used to calculate dew point andrelative humidity 11 inches in diameter and 20 scales

 

Mixed Bag! Lot of Over 70 Drug Rep (Pharmaceutical) PensDifferent Shapes, Sizes, Colors, Materials and Medications Includes Provigil Calculator/Clock/Notepad &Aggrenox Scissors*The Provigil Calcul

 

Vintage, collectible medical apparatus! torch magnifying glass antique old. Very old - both are different designs but i believe the magnify the same 10x - what you see is what you get the alimum /silv

 

This auction is for a lot of 10 vintage magazine/booklets..... 5 issues Chemistry - A Science Service Publication.... 1946, June, May. 1947, January, February, April. Atomic Bombs, German War-Time Che

 

In good shape for age. Has wear from age / use .Could use a light cleaning Selling as pictured . Please see pictures. Selling as-is, as found due to age / enjoyment . Please bid accordingly. Email any

 

Keuffel & Esser Paragon Transit No. 74 0005 Serial. 234362 High Transmission Coated Optics Tripod 3 1/2" x 8 Thread Box measures: 20"x10"x10" Don't know a whole lot about this piece but if you hav

 

JOHN CASARTELLI SCALES MADE IN MANCHESTER ENGLAND BOXED OUNCES PER SQ YARD & GRAMMES PER SQ METRE PLEASE VIEW THE PICTURES FOR THE ITEM INVOLVED I HAVE NOT CLEANED THIS, THE MARKS ON THE FRONT WIL

 

Nice vintage carbide lamp made by Justrite Co., Chicago, pat date 1912. This was used in the Mass and Minesota copper mines in the U.P. of Michigan. Box is torn, lamp is good.

 

A Tiny, two sided, Celluloid and wood Pocket Slide Rule, Made in Germany, No 41 by Albert Nestler A-G, Lahr, Baden, between the Wars, I think. In its leather case, aluminium slide, no damage.The small

 

Vintage K&E Keuffel & Esser N4053-3 Mannheim Polyphase 10" Slide Rule w/case K&E Keuffel & Esser N4053-3 Mannheim Polyphase Slide Rule, Leather Case 10" Wood This auction is for a vint