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

 

small wooden box ,13 x 11 cm, with a set of napier,s bones or calculating tables made from wood. in good condition.

 

Old Advertising Dental Tin Christy's Tooth Powder - Distributed by Christy, Inc. - Newark and New YorkFront of the tin has a wonderful image of a sailboat.Tin has original contents, original shaker to

 

Vintage 5" dia. Bausch & Lomb Opt Co USA magnifying glass 4-1/2" blk handle Glass has a 4-1/2" black plastic 8-sided handle, glass rim looks to be stainless steel and marked "Bausch & Lomb Opt

 

this is a vintage pickett slide ruler. there is writing on both sides of the ruler.it is 12.25ins. long and weighs 3.8ozs.it comes with a case. it is all metal slide.

 

You are bidding on one 3" survey compass. the compass has a sighting system for measuring azimuths and a incline meter for measuring grades in inches per yard. The compass is in very fine condition, I

 

Offered here is a ten page book of original Field Notes for a survey performed on the Colonel Buford Lode, located n the Griffith Mining District of Clear Creek County, Colorado. Dated an early 1887.

 

My father recently passed and had a collection of over 1000 different cups. I am in the process of liquidating them. Contact me if you're looking for anything in particular. This will probably be a sl

 

In earlier times, we had to rely on passing or visiting apothecaries for our medicines. To dispense them, the apothecary used sets of hand held beam balances and weights. These had panes made of varyi

 

For sale is a vintage Pickett Slide Rule that measures just over 12" long, along with it's original Picket labeled leather case. Aluminum slide rule in great condition. Model N-500-ES.