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While browsing an Ashton Valve pocket catalog, an interesting gage and valve brochure dropped out concerning refrigeration and chemical services.
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Another trade show giveaway, this small Ashton Valve ruler is small but loaded with information!
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Another recent acquisition. An Air Brake Inspectors Test Gage. It was made in 1913 and I included a catalog page with information and an old advert from 1905.
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Another 14" diameter pressure gage recently acquired. I can't be positive, but I'm estimating it's from the mid 1930s.
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Another recent aquasition, a water gage. It's imossible to date this one as there is no serial number on the gage face. I've included a catalog page from 1928 for information about the gages purpose.
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I recently picked up this nice chrome plated pressure gage.
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Another ebay acquisition. This is a celluloid bridge counter. It would have been handed out at expositions and trade shows. I don't know a thing about playing bridge, so maybe someone can fill me in about this one.
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I recently purchased this 1912 advert that was printed in the Practical Engineer journal.
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I recently found these full page adverts from old trade journals.
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I also found a pocket size caisson gage used to measure air pressure while working in a caisson.
https://en.wikipedia.org/wiki/Caisson_(engineering)
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I recently picked an an Ashton illuminated pressure gage with translucent glass to alow the light to pass through the gage face. The electrical element is missing but it looks like it could be replaced without too much difficulty.
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I came across this at a railroad museum in Wakefield, NH. Someone thought it was a ballast tool. It's about 3 1/2 to 4 feet long. Any ideas?
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American railroad bridges
by Cooper, Theodore, 1839-1919
https://archive.org/details/americanrailroad00coop/page/n1/mode/2up?q=railroad+bridges
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Bridgeport’s Chicago & Alton Railroad Bridge
by Patrick McBriarty
https://forgottenchicago.com/articles/bridgeports-chicago-alton-railroad-bridge/
https://historicbridges.org/bridges/browser/?bridgebrowser=illinois/chicagoaltonrr/
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A pictorial history of the first railroad bridge across the Mississippi River and its three successors
by Curtis C. Roseman
http://www.riveraction.org/bridgehistory
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