Lot of 8 optical pieces. These are vintage pieces and in good condition. I do not know how old they are. A few of them look like they have tarnished around the edges. I purchased these with the intent

 

Hutchinson blasting wedge measuring 12 1/2 inches long in very good condition.

 

Up for auction is a very good example of a vintage physician's license plate topper. This topper is still in it's original box with the instructions and original hardware. The topper frame is made of

 

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

 

These antique French Lemaire f Paris opera glasses are mother of pearl and brass. They are in good condition, with some minor scratches on the brass. They are fully functional with crisp optics. They

 

In brass, no maker's name but typically 19th century well made, a small student's microscope, in fitted mahogany carry case, brass fittings, with original brass tweezers, slide holder, three part obje

 

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

 

stlukeshospiceplymouth store Fischer Hair Hygromter - Relative Humidity Meter

 

THIS IS A FABER-CASTELL 52/82 D-STAB DUPLEX SLIDE RULE, NOTE: IS USED, BUT IN LIKE NEW CONDITION!

 

Artery model demonstrating the four stages of atherosclerosis. Model shows four stages: Normal, Fatty Streak, Plaque and Stenosis. All stages rotate on a hinged pin. Product is new, unopened and in or