This is a very gently pre-owned but unused pair of vintage navigator’s precision dividers. This great measuring device was made in Germany and reflects the precision and attention detail expected in

 

Up for auction is aVintage Bausch & Lomb Soft-Lite Lense Silver Anniversary Card / Glasses Holderlight scratches and pitting (2 7/8" tall x 2 1/4 wide x 1 1/4" base 2 3/4" x 1 3/4") Over the next

 

An original 1930's (approximate) nurse's uniform complete along with a photo negative, bible, etc. I got this at an estate sale of a 90 year old woman. I'm not sure if it was hers or an older relative

 

Offered is a Pinkham & Smith porcelain thermometer. At the base of the thermometer is marked AMER. THER. CO. ST. LOUIS. The height is approximately 5 3/4. The face is porcelain, I am uncertain wha

 

ANTIQUE 2 PART DOUBLE SIDED FOLDING SNELLEN EYE CHART TEST FOR DOCTORS OFFICE THE FOLSOM CHART IS DATE 1914 AND I DO NOT SEE A DATE ON THE WOOLF CHARTS BUT THEY WERE FOUND TOGETHER AND DATE AROUND THE

 

FREE SHIPPING!! The Kit Includes: 2 - 10" Green Gold Pan - The GREEN color contrasts the BLACK sand and the GOLD in your pan. 2 - Suction Tweezers - Suck up the fine gold and move it to your storage v

 

Edmund Scientific Catalog1980 Fall/Winter112 PagesIncludes Order BlankVery Nice Condition(Inside Pages and Covers are Yellowing)Very Interesting Reading

 

A Collection of Circular Slide Rules and Calculators. See photos for what is included. All are in very good condition except the Range Computer which has 3 internal cracks in the back plastic disk. So

 

Here is a very-good-condition, vintage wooden slide rule from Keuffel & Esser Co. that comes with its original leather case. The slide rule measures about 10.5 in. long and features equivalents an

 

Thiourea is also known as thiocarbamide. White, lustrous crystals with a density of 1.4 and a melting point of 180 degrees Celsius. Soluble in cold water. It's uses include - photography (removing sta