Here is a very-good-condition, vintage wooden slide rule from Keuffel & Esser Co. that comes with its original leather case. The slide rule measures about 10.5 in. long and features equivalents an

 

Drug Rep Heavy Metal Pens Lot of 9, 7 Heavy Metal 2 Fat Chunky Product Description This is Drug Rep Heavy Metal Pens Lot of 9, 7 Heavy Metal 2 Fat Chunky . This is for 9 pens. The Chunky ones are Roze

 

The glasses work great. Please note that the leather is a bit worn in some places. Beware - I strive to offer rock bottom prices. Don't be fooled into thinking there is something wrong other than what

 

Description: Lot of 5 great old styles of eyeglasses, includes 3 cases. You get round Wire rimmed, black rimmed with green tint and hippie looking john Lennon style. All true vintage....no reproductio

 

This Compass set has been mine for 20+ years and served me well. Now its time to pass it on to the next Owner.

 

The title page reads in part : "A System of Geometry & Trigonometry together with a Treatise on Surveying; Teaching Various Ways of Taking the Survey of a Field; Also to Protract the Same & Fi

 

Direct from a Southfield, Michigan Pharmacist’s estate. The sign is 6” wide and 9” high. There is a decal laid down on the back of the glass to make it look like a leaded window. The frame is me

 

Slide Description: This is a very good Injected Section of Human Bladder by E. Wheeler in superb original condition. Slide Condition: Excellent specimen Over the next few weeks of May we will be selli

 

This is a canon Pocketronic which I understand to be the first or one of the first handheld calculators. The machine has no screen, the info comes out on a thermal tape. This machine has not been plug

 

SUNDIAL I recently acquired a large collection of vintage compasses and other similar scientific/field instruments from an estate. These are not my area of expertise but they all seem to be in working