Click to Enlarge Click to Enlarge Click to Enlarge Offered for auction is a vintage brown leather belt clip for a K + E slide rule case. It is 4 1/4" long and in very good, used condition. Payment is

 

From what i can tell this unit works. I do not have the instructions and know very little about it. Some of the button faces have worn off but have been labeled with a sharpie. Comes with case and pow

 

Keuffel & Esser Vintage Survey Level, dating from the early 50's.

 

OUT OF PRODUCTION, DR. BREWSTER'S ULTIMATE PRECISION KALEIDOSCOPE KIT BY VAN CORT INSTRUMENTS, INC. NEVER USED. BOX IN EXCELLENT CONDITION. COMES WITH INSTRUCTIONS. ONE ITEM HAS HAD THE PLASTIC OPENED

 

Post 1460 HEMI Slide Rule With Leather Case Versalog that is in really nice condition. The flap of leather case does have some black marker where it now covers over the previous owners name. This slid

 

VICTORIAN ANTIQUE OPERA GLASSESEXCELLENT QUALITYRARE ITEMOPTICS POWERFUL AND CLEARTELESCOPIC HANDLE

 

-+ Dated October 28, 1898 out of Little Clear Creek Mining District in Alaska. It measures approx 6-1/4" x 8". Creasing and folds. Writing is in excellent condition. I put a "-?-" where I couldn't mak

 

This is a canon Pocketronic which I understand to be the first or one of the first handheld calculators. The machine has no screen, the info comes out on a thermal tape. This machine has not been plug

 

Vintage Atlas Powder Co. Blasting Machine. Good condition. No leather strap. Used at Quonset Point Naval Base in Rhode Island. 13"x 8"x 6 1/2" . See pictures for details

 

Three vintage rules - Fisher Governor Company, Marshalltown, Iowa U.S.A. - Pickett - Fisher Control Valve Sizing Rule. In leather case w/two supplements Sterling U.S.A. Metric Converter Vintage wood C