VINTAGE ANTIQUE DAVIS INSTRUMENT COAL MINE ANEMOMETER ANEMOMETERS Mechanical anemometers are an instrument used to determine the volume of air entering or exiting mine workings. They were invented by

 

Lot of vintage medical forceps. Winner gets: V. Muller & Co. Germany stainless curved forceps, Lawton Germany ENT forceps, V. Mueller Co. heavy stainless cup forceps and Storz stainless Germany fo

 

Miner's Powder Flask Very Stout Construction in Excellent Condition ----------------------------------------------------------------------------------- A great miner's powder flask / blasting items th

 

VINTAGE 1940's TRIANGULATOR SLIDE RULE MAKES TRIGONOMETRY EASY POCKET SIZE Click image to enlarge Description 9/17    A terrific collectible - A 1940s 'TRIANGULATOR' SLIDE RULE!  'MAKES TRIGONOMET

 

Staedtler Mars Electric Eraser Blue (527-00) USED

 

justrandman Store NEW CURTA CALCULATING MACHINE. TOOK OUT OF BOX FOR PICTURES WITH ORIGINAL BOX, CONTAINER, COMPUTING EXAMPLES MANUAL, AND CERTIFICATE OF GUARANTEE CURTA CALCULATING MACHINE CONTINA AG

 

This listing is for 2 VINTAGE TRIGONOMETRY TABLES BOOKLETS , an ITW & EX-CELL-O Corp. The 6 1/2" by 3" booklets are both in very good used condition and both have slight wear. The EX-CELL-O book h

 

Great barometer, thermometer, hygrometer in laminated wood frame with ships wheel design around the barometer. Made in West Germany, in great working condition!

 

Here is a blank make your own slide rule kit from Dyna-Slide. There is a no 21 blank with a sealed envelope that I assume holds the hardware and an instruction book. Not a common rule to find, get one

 

1930'S BAUSCH & LOMB TWO-SIDED (PLANO & CONCAVE) MIRROR WITH YOKE AND ARTICULATING ARM MIRROR WITH A FEW TINY AMBER AGE SPOTS MIRROR DIAMETER = 1-7/8 INCHES