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

 

Vintage Brass Mortar and Pestle Honoring Pharmacy Fraternities - Has 6 fraternities and their emblems from 1879 to 1921 Stands 2 3/" - Pestle is marks SCHERING Please, scroll down as there may be addi

 

VINTAGE MINE SAFETY APPLIANCE (MSA) MESTA MACHINE HARD HAT WEST HOMESTEAD PA. Vintage hard hat with original head liner is in good solid condition with some use and age wear as shown. Hard hat could u

 

BODYMAN1953 store Arithma Addiator Vintage Math Scale ** COLLECTIBLE **Arithma Addiator Vintage Math Scalewith stylestVery NeatMEASURES 6 1/4 x 1 1/2 in. DON'T KNOW MUCH ABOUT THESE KINDS OF ITEMS ##W

 

This listing is for a Keuffel & Esser Compensating Polar Planimeter 620000 w/Case. This item is in very good cosmetic condition. The foam lining inside is in very good condition. The two locking l

 

1952 POPULAR SCIENCE JULY HOW TO BUILD A PLASTIC PORCH WILBUR SHAW FLIES A CAR 242 Pages USED: 3 corners wear. Near new otherwise. ( Some photos listed: Delta wing fighters Convair XF92A; Jet giants â

 

Here's a Vintage Coal Miners Cap/Helmet/Hat that's made from Leather & Steel and, as you can see, is in Used "COOL LOOKIN" Condition coming with the Pa. Union Pin and the Miners Safety Slips/Cards

 

Handmade Customized ARTIK Kaleidoscope by Artist Jun JamosmosThis is a unique creation from the artist Jun Jamosmos, an oil/acrylic painter who features his artwork in the body of the kaleidoscope. AR

 

WHACKYMUSEUM Medicine Measuring Cup - Cobalt Blue GlassEmbossed Numbers around the Rim and on the bottom it says, "This Cup Holds a Heaping Dessert Spoonful" condition - good. Refer to photos. measure

 

Here is a very nice, Dietzgen Excello ruler set. The rulers are #1532 A-G and an SP, so a total of 8 rulers. The box is marked MC No.146 on the base. The rulers appear to be made of Bamboo. They are i