Keuffel & Esser Compensating Polar Planimeter 4242 Good condition. Serial #13158 Comes in fitted case and box with 2 manuals and a paper with factors for scale drawings or maps. Outer box is prett

 

Up for auction are 6 Viagra drug rep pens. They are NEW! These pens are plastic, however they look like metal. Very classy pens. They are ball-point pens. Please feel free to ask any questions that yo

 

A useful collection of mainly Microscope Accessories to include a Bullseye Stem & Stand (minus its Lens ) .. Lens Accessory .. Reflecting Mirrors .. Lens Cannister and other bits and pieces. Plus

 

For sale is a Consolidation Coal Company Hanna sticker in perfect condition never peeled.

 

Vintage Bruning 2401 5" Pocket Slide Rule w/Leather Case, Box & Instructions

 

If you collect or restore old radios, crystal sets, early scientific apparatus, vintage test equipment, military surplus, or other unique old technical items, keep me on your favorite seller list. I a

 

If you collect drawing instruments then this may interest you. The item is a small set of vintage instruments manufactured in brass with some steel on the points. They come in a polished wooden box me

 

betterthangoodstuff99 Store VICTORIAN MAHOGANY BAROMETER WITH INLAID MARQUETRY DESIGN WORKING c1890.  HERE I HAVE A GOOD VICTORIAN MAHOGANY CASED BAROMETER WITH INLAID MARQUETRY DESIGNS IN WORKING OR

 

Miniature Tesla Coil / Oudin Resonator Powered from a 3500V 8mA transformer (12) 690 PF Doorknob Caps for .00828 mfd Antique Self-Cooled Tungsten Spark Gap 1" copper ribbon primary coil 3 5/8" diamete

 

For sale is a Vintage Glass Manifold 4 valve over 3 feet Glass Laboratory/Science/Chemistry/Apothecary Pyrex, Glass is all sizes and shapes and free of any defects. Please see the other glass lots and