Set of two 3 1/2" diameter lenses from an old GE projects build in the early 80's. These are in excellent condition. My eyes can see no chips or scratches. Good luck bidding. PAYMENT MUST BE RECEIVED

 

No reserve. High bidder wins...And...I ship fast! Nice condition Lawrence Engineering # 250-BT scientific / engineering wooded slide rule with case. Looks and operates nice. Some very small marks. Inc

 

Offered is a vintage Eagle Turquoise PRESTOMATIC Lead Holder Pencil #3377. Original box and instructions and a partial sleeve containing 5 unused 2H Eagle Turquoise drawing leads. Great vintage drafti

 

One used vintage in very good condition McKesson Victor Oxygen valve regulator made in the USA. Any questions email me.

 

Miner's Schroeder Patent Candle Stick. Total length is 8 3/4 inches, hook is 2 3/4 inches and the loop is 1 5/8 inches in diameter. There are the remains of some light blue paint on the end of the spi

 

This LOGA calculator is in excellent condition, the wooden case it's in is in fair condition. DESCRIPTIONThis large cylindrical slide rule consists of an aluminum frame supporting a horizontal rotatin

 

This antique farrenheit thermometer is used and works good. It measures from -60 to 120 degrees.

 

A vintage metal 6 inch metal slide rule manufactured in the USA by Pickett & Eckel in 1959. Model N 1006 T, TRIG. The rule is in good condition with minor wear and light soil. No attempt has been

 

Old UV Condenser from Carl Zeiss. Suitable for older Universal microscope systems. 0.8 NA. Aperture diaphragm control. Good condition. PayPal. Ship to USA or Canada

 

Up for bid a great set of slide rules including 1965 STERLING DECIMAL-TRIG MULTI LOG SLIDE RULE W/ CASE made in U.S.A. 1960 PICKETT ALL METAL MODEL N3-ES LOG EXPONENTAL SLIDE RULE with leather case an