PRECISION PANTOGRAPH by BOYNE, INC, CLEVELAND, OH New in Original Box with Instructions & graphite points 25 Different Ratios to enlarge or reduce any drawing precisely 21" long calibrated aluminu

 

Stannous chloride is a white, crystalline solid having a density of 3.95 and a melting point of 247 degrees Celsius. Soluble in water and alkalines. It's uses include - ceramics, sensitizing agent for

 

Up for auction is a fully marked Keuffel & Esser 1376P-9 Paragon Drafting Machine Scale 18” with metal clips, wood, in its original case. It measures 18 ¼” long x 1 ½” wide. Condition: ver

 

One (1) Vintage set of Howard Sutton Proportional Dividers. Made in Germany. They're in great shape. I've collected several others lately, and i cant use them all. I need to make room. Pictures pretty

 

twix Store Antique Doctor's Otoscope / Ear Trumpet Set With Case Canadian bidders - We are a registered business, if you are a Canadian resident, add GST - if you live in Ontario, please add HST. Cana

 

vintage soviet Ussr scientific thermometer very accurately measures, accuracy - 0,2 degree of Celsius range from -30 to +50 degrees of Celsius

 

measures 25 cm long , and 10 cm wide in diameter , this is new , NOT old , please see photos , any questions please ask , i have lots of other items listed .. ..please see my other items and add me to

 

99p Auction Start A Phrenology Head Figurine Antique Ivory Colour Finish Measures: 8.1/2" high (21.5cm) approx Photo's show that some of the words are not very clear on the top of the head.BEING SOLD

 

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

 

I AM PLEASED TO OFFER THIS SCARCE VINTAGE 1962 SIC SCIENTIFIC INSTRUMENTS CO CIRCULAR SLIDE RULE MODEL # 120 PROFESSIONAL - INSTRUCTIONS - CASE - ORIGINAL BOX - AT AUCTION (SEE IMAGES). I RECENTLY ACQ