VINTAGE SLIDE RULE KEUFFEL & ESSER COMPANY POLYPHASE DUPLEX SLIDE RULE IT IS 12 1/8" LONG THERE IS 3 PATENT DATES ON IT-JUNE 5,00-DEC 22,08-8.17.15 IT IS IN EXCELLENT CONDITION COMES WITH ORIGINAL

 

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

 

Rare Parke-Davis Parest-400 Pharmaceutical/Drug Rep Advertising Pen/Pencil HolderParest-400 (Methaqualone HCI) AKA. Quaaludes Advertised For "Restful Sleep"Estate Find....Has A Few Scuffs & Scratc

 

Solid, traditional compasses, for pencil, by Helix. Fully functional, light tarnish.

 

Vintage mid-20th century Swift & Anderson barometer, thermometer, and hygrometer with great retro look, in wood, brass, and glass. The three part weather station features round instruments encased

 

ANTIQUE MICROSCOPE SLIDE BY C.M.TOPPING. PROBOSCIS OF BEE. MOUNTED USING THE LESS USUAL GREEN & GOLD PAPER SEE IMAGES FOR CONDITION. EXCELLENT. FROM 17TH JULY UNTIL 6TH AUGUST I SHALL BE UNABLE TO

 

Normal 0 false false false EN-GB X-NONE X-NONE MicrosoftInternetExplorer4 Original 1970s Weather station. Plexiglas sphere with a chrome circular thermometer, hydrometer and barometer. The sphere has

 

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

 

Size is 29"x35" with the wooden dowels adding a few inches to top and bottom. Paper on linen backed scientific chart. Made by Hagemann Company; Drosophila sex-linked II (criss-cross). There are 2 smal

 

Describe of the item: 100% Vintage! Condition: used, We think it is in VERY GOOD vintage condition if consider its age! We can offer it wholeheartedly to all collector. This one is only one on whole E