Hope 740 custom circular slide rule made by Concise Co. of Japan and marketed under "Hope". This is an English-Metric converter, the front is a 3" pocket circular slide rule...attached to a rectangula

 

Hello , I have a United Central M40 M gas detector used in a West Virginia underground coal mine i bought it 2 years ago but out of 2 years its been used for about a year, the plastic screen cover is

 

Lot of eleven (11) milk glass dental trays. Made by the American Cabinet Co. All trays (except one) measure 8" long. The smaller one (on bottom row, far right) is 5".All trays are used/pre-owned. On t

 

Vintage Pfizer Drug Reg Pens: * lot of 2 * both heavy weight pens, weighing almost one ounce each * one has a marbled top and the "Viagra" blue bottom; it twists open * this one measures 5-1/2" L * ot

 

This is a U.S.A. made Schell hard shelled doctor's bag with black cowhide exterior and TWO KEYS. The bottom is stamped DLA120-78-C-4994. If you are looking for a clean, functional doctor's bag, this i

 

Plastic slide rule concrete calculator from The Brewer Co. Cincinnati, Ohio. Shows normal wear, but all printing on both sides is very legible. It is 7" long. An interesting advertising or contractor-

 

Normal 0 false false false MicrosoftInternetExplorer4 If you collect or restore old radios, crystal sets, early scientific apparatus, vintage test equipment, military surplus, or other unique old tech

 

If you have any questions feel free to ask :-) THANK YOU!

 

RELISTED DUE TO NON-PAYMENTAN ANTIQUE ADJUSTABLE BRASS TABLE TOP MAGNIFYING GLASSPROBABLY DATING TO THE LATE 19TH / EARLY 20TH CENTURYSOLID BRASS WITH LAQUERED FINISHSTAND HAS THREE BALL ENDED FEET WH

 

Well, never seen one of these so all I can do is describe: 3" diameter solid brass instrument, has small magnifier on top that moves byturning the knob next to it. this turns a pointer along an arc'ed