Fascinating scope. Dual axel rotating object drum. Spinner can be turned on one axis to change the colors and turned on the other axis to change patterns. 2 mirror 6 point system. Third side of mirror

 

Edmund Scientific Corpcatalog No. 564. This is probably from the early to mid 1950's. I'm not sure of the date, but checking on the web located catalog No. 569, dated 1957, so this one is older. There

 

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

 

Antique Microscope Camera Lucida. To fit tube/eyepiece size 27.2mm. See images for condition: Excellent. Optically and mechanically fine. This actually works incredibly well, compared to many others I

 

Up for Auction is a used Koehler Wheat Mining Light Charger Model 1200 in good working order. HAPPY BIDDING.

 

Dietzgen Co 1667BP Triangle Ruler & Alvin No. 241 with Cases Two nice vintage engineering triangular rulers Shipments whenever possible will be made within one business day. Payment must be made v

 

. OLD LUCKY'S GEMS & JUNK An old Miner's 3 Pc. Oval "Priscilla Aluminum" Lunch Pail. Good used Condition, with minimal wear. No dents on lid or bucket. Original Aluminum Strap Handle has some rust

 

MINI COMPASSES I recently acquired a large collection of vintage compasses and other similar scientific/field instruments from an estate. These are not my area of expertise but they all seem to be in

 

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Classic L.N. Fowler Phrenology head. This is the large version, measuring 12" high and 5.5" wide. Great decor piece to put on your bookshelf.