Edmund Scientific Catalog1980 Fall/Winter112 PagesIncludes Order BlankVery Nice Condition(Inside Pages and Covers are Yellowing)Very Interesting Reading

 

This is a Picket slide rule from the Cleveland Institute of Electronics and the patent date goes back to 1964. The slide rule is a plastic I think with metal on all the edges including the center slid

 

THIS AUCTION FOR THE BENDER VISUAL MOTOR GESTALT TEST. ORIGINAL MANUAL+CARDS IN USED CONDITION- SOME BROWNING FROM AGE. 9 CARDS A +1-8. ON BACK OF CARD HAS COPYRIGHT INFO. 1946 BY LAURETTA BENDER AND

 

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

 

You are bidding on a 11"x 14" color photo with of Amax Coal Company's 2570 Bucyrus-Erie dragline at their Chinook Coal Mine Staunton, Indiana coal mine mining.THIS PHOTO THAT IS PICTURED IN THE LISTIN

 

This helmet was my Father's. He used it in the deep mines in the Anthracite region in northeast Pennsylvaina. The lamp shown on the picture is not included with the sale of the helmet.

 

Thiourea is also known as thiocarbamide. White, lustrous crystals with a density of 1.4 and a melting point of 180 degrees Celsius. Soluble in cold water. It's uses include - photography (removing sta

 

This is for an old surveyor's transit made by Keuffel & Esser Co. It has the serial number 233726 on the tag. I don't really know anything about this piece but the optics seem to be really good. I

 

Vintage Leupold Sportsman Compass,Used but looks new.Diecast and glass Has complete original instructions, back of box has some writing on it,but in overall great condition!

 

I have a used Vintage Coal Miners Anemometer Used and Carried buy a mine Examiner to measure the air velocity in underground coal mines ; It is made by dais Manufacture a well known maker of these ane