John davis and son co. baltimor Md. Animometer

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Posted by ibenesgtr
17 years ago
AI Appraisal
💬 1 Comment 🗣️ Discuss with Community
Description This insterment has eight blades. is solid brass and has a glass dial. also has the original leather case.
Category Scientific Instruments
Medium brass
Distinguishing marks john davis and son co.
Condition Excellent
Size and dimensions of this item 3in by 3 in
Date Period late 1800's to early 1900's
Weight aprox 2lb
History this was given to me by my grandfather, who worked his whole life in the coal mines
eBay Auction Link /no
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Collector Discussion

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R
ramblinrec 🌱 Newbie 17 years ago

<p>&nbsp;</p><p>&nbsp;</p><p>Usually these werre aluminum but there could have been brass ones , should have three subsidary dials for hundred , thousand and ten thousand feet, It is considered rare in aluminum as just after it was first sold the side effects of using aluminum in a coal mining atmosphere was discovered, This may be the solution as it would have been remanufactured out of brass to solve the problem , I know the aluminum one goes for 200 to 400 dollars not sure of the brass but assume it is less maybe 100 to 200 dollars but this is a niche group  and you have to find the buyer. </p><p>you might go to </p><p>http://miningartifacts.homestead.com/Anemometers.html</p><p>to compare what you have to others</p>
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