MICROSCOPE SLIDE. B. DARNTON. FORAMINIFERA. UNUSUAL LABELS. A superb slide of FORAMINIFERA from Brian Darnton – prepared in his usual careful manner and Dry Mounted on a photographic grid of 25 squa

 

Sodium perborate is a white, granular solid which decomposes in an aqueous solution to hydrogen peroxide and sodium borate. Active oxygen content 10%. Melting point is 63 degrees Celsius. It's used in

 

VINTAGE K & E SLIDE RULE POLYPHASE NO. N4043-3 MADE IN USA GREAT CONDITION WITH CASE ORIGINAL BOX INCLUDED BOX TOP HAS SOME WRITING UNDER COVER NO BREAKS FUNCTIONS PERFECTLY LOW STARTING BID OF ON

 

NIB Galileo Thermometer which stands 11 inches tall. Instructions are on box for proper reading. This item will be well wrapped and insured at time of shipment. Great fathers day gift. Italian astrono

 

Normal 0 false false false EN-US ZH-CN X-NONE MicrosoftInternetExplorer4 Normal 0 false false false EN-US ZH-CN X-NONE MicrosoftInternetExplorer4 Vintage Keuffel & Esser Surveying Pole. Frisco mod

 

Limited supply, get yours now! This auction is for one gold, silver, and ore refining kit. Now with two 2" magnesia cupels included. This kit was put together with the thought of tinkering in mind. Th

 

1942 Florence Nightingale PledgeCard Stock 8" x 10" Good condition, there is a little fading on the right edge that would be covered by a frame. Always listing interesting & unusual items so be su

 

A Paraline Professional Architects model RAS instrument, Loomis Industries; with box and manual. The instrument measures 12 and 1/2 inches 2 and 13/16 inches, with wheel extending a further half inch.

 

AN "ERNST LEITZ WETZLAR No 192163"BINOCULAR MICROSCOPE.RACK GEAR IS WORN AS SHOWN IN PICS 2 & 3SOLD FOR SPARES REPAIRS PARTS ONLY.A GOOD QUALITY MONOCULAR MICROSCOPE WHICH APARTFROM THE RACK SEEMS

 

This is a hand made kaleidoscope by artist, Dan Curry. Dan was known for making quality kaleidoscopes out of found objects – vases, antiques, discarded items. As a result, they were pretty much uniq