Keuffel & Esser Compensating Polar Planimeter 4242 Good condition. Serial #13158 Comes in fitted case and box with 2 manuals and a paper with factors for scale drawings or maps. Outer box is prett

 

A unique kaleidoscope from Van Cort. The wooden egg shaped kaleidoscope is highly polished and 2" tall. It is in excellent used condition and sits on a 2" tall brass stand. Thanks for looking!

 

The title page reads in part : "A System of Geometry & Trigonometry together with a Treatise on Surveying; Teaching Various Ways of Taking the Survey of a Field; Also to Protract the Same & Fi

 

Click on the picture above to visit our Store Description: We are pleased to offer you Small Genuine Russian USSR Leningrad Mathematical Measurement Ruler/Line In CaseCondition: The condition of the i

 

20 Antique and Vintage SLIDE RULES 8 K&E, 3 Dietzen, 3 Pickett, 1 Crei, 1 Post, 1 Charvoz-Roos, 1 Dumont,1 Acumath and one US Government. See photos. All are in excellent condition for their ages,

 

if you're looking for a great antique mining showpiece, this is the item for you.

 

smartcNa Store vintage MAGNETS for LABORATORY experiments, in original wooden box

 

You are bidding on an awesome lot of 34 twist Lipitor/Caduet Black Ball Point pens. They have a nice heavy feel to them and write smoothly. These are the jewel-tip ones. They look like they have a lit

 

For sale is a Eli Lilly & Co. Oneida Silver Plate Sugar and Creamer set. Back in the 1980's, CECLOR (cefaclor) was a major product for Lilly and back in those days, $300 Million and $400 Million i

 

Although this vintage Keuffel & Esser slide rule is used, it is in excellent condition, as is the leather case. It is 12.5" long. Made in New York in 1947. Owned by a development engineer for Borg