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

 

Vintage Barometer Superb Vintage 1940/50s British Made Barometer, In Very Good Condition and Seems to Be Good Working Order,(very fine scratch on wood). Oak Wood Surround. Measuring approx. 7" x 6.5"

 

Up for auction is a vintage Bruning electric eraser. This item is in great working condition and has had very little use. There is a very little paint loss from where the case rubbed on my Dad's draf

 

Great condition with leather case in great condition also

 

I have for sale one Charvos brand antique drafting set. It comes with a hard, black carrying case, and includes five compasses of varying sizes, along with some other tools, of which I am unfamiliar.

 

Omega precision 361 with a British imperial navy badge is whats on the container .All the clips work and the flaps are intact. The wooden box inside is intact and in 2 tone blue , looks good. Has 12 p

 

Rare Antique Yellow Tinted Glass Horn Cased Folding Lens Loupe Click the photographs to enlarge. Colours may differ due to any flash used. I combine lots so please wait for my invoice BEFORE you pay.

 

K&E Slide Rule 4081 leather holder and booklet. In good condition. See all pics and ask questions before bidding if you are unsure of something. AS IS no returns. NY residents must pay 8% sales ta

 

FOR SALE IS EXCELLENT CONDITION RIEFLER OF GERMANY DRAFTING / DRAFTSMAN SET THIS IS COMPLETE AND IN EXCELLENT CONDITION 2 EXTRA SCLAE RULERS ARE INCLUDED ALL ARE HOUSED IN A NICE SECURE METAL CASE THA

 

PROPORTIONAL DIVIDERS by POST For Use in Craft, Art, Drawing, Drafting This PROPORTIONAL DIVIDERS is USED and comes in its original plastic case. Made by POST. No model number available. The dividers