VINTAGE SLIDE RULE KEUFFEL & ESSER COMPANY POLYPHASE DUPLEX SLIDE RULE IT IS 12 1/8" LONG THERE IS 3 PATENT DATES ON IT-JUNE 5,00-DEC 22,08-8.17.15 IT IS IN EXCELLENT CONDITION COMES WITH ORIGINAL

 

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

 

Beautifully hand craftedwooden Kaleidoscope with standand 3 interchangeable wheels This is one of the most beautiful kaleidoscopes you will ever find.It was purchased approximately 40 years ago in Nor

 

THE FAT-BOY Hand-Dredge ONLY $18.00 Custom made gold extractor hand-dredge designed for extracting material from creeks. Great Price, GREAT return policy! We are so positive that you'll like our produ

 

The case isn't great, missing the nails to close it. Model number 64/581. The tool is in great shape.

 

permissible gas mask for ammonia. mine safety appliances co the mask is in good shape no dry cracks the spare canister still sealed

 

Brass Van Cort “Companion” Pocket Kaleidoscope Up for auction is a Brass Van Cort “Companion” Pocket Kaleidoscope. In very nice condition, comes with original box. Measures 5 1/8" in length. �

 

This auction is for Antique Brass and Copper Miners Teapot wick lamp . This is not signed. It is 3.75" tall. In nice shape. It has a few minor shallow indents. Minor oxidation on the inside of this, a

 

These 10 Microscope Slides are all of Botanical subjects by Flatters and Garnett, a company well-known for their prolific output and the excellent quality of their slides. The slides are in excellent

 

Wall Barometer Fine Weather Instrument For Your Home Or Ideal Gift Quality New Elegant Weather Barometer This Barometer is New and Boxed This traditional wood framed barometer shows you exact informat