History of science. This is a shanked microtome knifes with a rectangular blade and handle. Date ca 1880-1890. The knifes is stored in a flat black leather case lined in maroon velvet and red silk. .

 

Drafting Protractor For auction, with no reserve, is an early 8-inch drafting protractor made by the Union Instrument Corp of Plainfield New Jersey. Item is stamped U.S., indicating that it was made f

 

Propeller Protractor in wooden box

 

Old Cutaway Instruction Scale Model Steering Here you see an instruction model from a german driving-school.It is not a toy! This model was helpful to show learner drivers how a car-steering is workin

 

Charles Bruning Wallace DRAFTING MACHINE Vintage Model No. 2699. This was bought at an estate sale where it looks to be in good condition. It is huge and heavy. Comes just as you see in the pictures.

 

You are bidding on two pairs new old stock John Lennon type round frames Frames are marked M 1/10 12 kt GF frames are marked on temples and bridge. One is used and markedSC USA 1/10 11kt GF These are

 

1930'S BAUSCH & LOMB TWO-SIDED (PLANO & CONCAVE) MIRROR WITH YOKE AND ARTICULATING ARM MIRROR WITH A FEW TINY AMBER AGE SPOTS MIRROR DIAMETER = 1-7/8 INCHES

 

In good condition a microscope platform accessory with 4 Objectives in its original box by Meopta Praha.Unsure what it is called any help would be appreciated.The platform measures 3 3/8ths in diamete

 

For sale here is a David White Co. 6061 Balloon Theodolite. The plate says No. 91024. Olive green in color and comes with wooden storage/transport box. Box is sturdy but has many scratched, nicks and

 

ANTIQUE MICROSCOPE SLIDE BY W.WATSON. POLYCISTINA. HALIOMINA HUMBOLDTII. SEE IMAGES FOR CONDITION. EXCELLENT. I AM LISTING MORE ANTIQUE MICROSCOPE SLIDES OF VARYING SUBJECT MATTER OVER THE NEXT FEW MO