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I have this tool and not sure what it is used for. The T-handle, if you will, swivels. The word “Waterbury” is stamped on one side. And “solderometer” is stamped on the other side. I googled it with no helpful results. I would enter image description here

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  • Please edit to complete your question, which appears to be cut off mid-sentence.
    – Ecnerwal
    Commented Nov 4, 2023 at 14:08

1 Answer 1

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I found several references in Google Books from the early 1900s to a solderometer as a tool that's used to measure the percentage of tin in a batch of molten solder. Apparently, solder with less than 35% tin would make a no-good porous solder.

The books' mentions of a solderometer were in reference to making splices in heavy electrical cables, especially during the transition from DC to AC power distribution. "Cable wipes and lugs" were mentioned, and there was a Waterbury Cable Company.

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  • Thank you for your troubles. Much appreciated. I guess my research skills need some improvement. Thanks again! Commented Nov 5, 2023 at 6:19
  • Fascinating. This explains how to do it without this tool. You are basically measuring density. Presumably this device has a density somewhere between tin and lead, and sinks into a pot of molten solder just the right amount if the mix is what it's meant to be.
    – jay613
    Commented Nov 5, 2023 at 16:24

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