Let my ignorance about these instruments be Your Gift. I Do Not claim to know of these items except they are really old,( 40's- 50's )maybe even older ? They seem to be in good condition The box lists

 

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K & E KEUFFEL & ESSER MODEL 68 1210 SLIDE RULE AND LEATHER CASE . All in Excellent condition with little signs of use . Made in USA. Has Pats. Pend Made in USA 68 2810 LOG LOG DUPLEX DECITRIG

 

A amazing vintage medical rubber stamp! Anatomy of a Frog! A must for your medical collection! Please view all pix, and feel free to ask questions . Will ship US only Posted with eBay Mobile

 

The label on this slide says: "Oxalic Acid" Carefully packaged in boxes. Thank you for your interest.

 

Up for your bidding pleasure is a Keuffel & Esser construction surveyor transit. Model # 77 0010 with a serial #176488 Aluminum base, plastic cover and retaining strap and latch is in good conditi

 

PRO-E Drafting MachineVery light usage

 

"VIBRATION MOTOR". Use this "Vibration Motor" on your Dry Washer, High Banker, Mini Power Sluice, Gold Wheel or ??? to help move the raw material and further classify the concentrates. To all of my fe

 

Vintage Keuffel & Esser Co. slide rule. Case and ruler show slight wear from use and age. There is a name written just on the inside flap of the case as shown in the pictures.

 

FREE Shipping in USA . Bidding early helps prevent someone from beating you out of what you wanted. Up for sale 1 Wood Explosives Box Hercules 500 Electric Blasting Caps Coal Mining Pa dovetail or fin