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This auction consists of a Knapp model no.405 in the original box. Runs on 2 volts. Box measures about 4 in. by 3in. by 3 1/2 in. Runs fine. Wait for my invoice as I look for cheaper ways to ship USPS

 

december 21science and inventionformerlywork and learn while you sleep ( rare )all pages there with tape around the back edge to prevent further damageplease refer to all pictures and ask questions be

 

Thank you for checking out our Ebay auctions! WELCOME!! Please find a wide selection of items for sale from KCI_Direct. Some of these items come from a dissolved engineering company and others come fr

 

This auction is for a beautiful vintage microscope refractometer that would be a great addition to any collection. It appears to have had very little use. It is a quality instrument and would display

 

Antique Blown Glass Drugstore Apothecary Bottle w Stopper & Pontil Scar c1900 Description: This is an antique blown glass apothecary bottle 6 1/2 inches tall with the stopper on and dating, I woul

 

CIRCA 1930 ' SEE-THROUGH ' COMPASS. Nice little compass made of chromed brass with clear glass to both sides enabling it to be used from either side. It is marked 'foreign' to the edge so it was proba

 

Antique RARE 1800's Barometer... MADE OF metal. It seems complete but I am not an expert so selling as is.....thermometer seems fine... see my photo. Glass in nice condition but requires a cleaning. C

 

A REALLY STUNNING 19TH CENTURY ANTIQUE LEATHER BOUND 3 DRAW TELESCOPE...MADE BY THE FINEST INSTRUMENT MAKERS DOLLOND OF LONDON...THE TELESCOPE IS IN REALLY NICE CONDITION, CRACK TO END LENS...THE TELE

 

Miners closed style frog lamp from the Harz area of Germany. Brass with sliding access to oil vessel. In my opinion this is not that old - maybe from the 1920's or 1930's. It is a replica of a rare la