Looks to be in very good condition, but remains untested for functionality.

 

For sale is a set of vintage Psychological Tests: Stanford Binet Scale by Lewis M Terman and Maud A Merrill Two boxes, one each for Form M and Form L. Copyright dated 1937. Comes in two boxes with a h

 

Sodium perborate is a white, granular solid which decomposes in an aqueous solution to hydrogen peroxide and sodium borate. Active oxygen content 10%. Melting point is 63 degrees Celsius. It's used in

 

sushimonster Store VINTAGE EAGLE PENCIL CO 566 569 COMPASS DIVIDER PROTRACTOR DRAWING DRAFTING TOOL

 

Up for auction is a antique Fahrenheit thermometer. Total length of the wood is 8 1/2" long and 2" wide and the glass measures 6 1/2" long. Shows signs of wear but mainly just minor fading. Still very

 

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

 

W Horwood & Sons Vintage Maths instruments set Description Set of Vintage mathematical instruments in leather bound case Made by W Horwood & Sons of Clapton, London, E5 Comprehensive set of di

 

VINTAGE 11" CARVED BUFFALO HORN HANDLE WITH 4" MAGNIFYING GLASS AND BRASS TRIM Vintage horn handle with large 4" magnifying glass with solid brass trim. Glass in excellent condition, no scratches and

 

Here we have a really nice early Cased Monocular Microscope in working condition. It is engraved: NEGRETTI & ZAMBRA LONDON. This fine piece is affixed to the base with screws . as can be seen the

 

Check out my other items! (Click on the symbol to see the other kaleidscopes in my store!) Award-winning design, one-of-a-kind, stained glass kaleidoscope, signed by artist. Completely handcrafted by