Oct 22, 2019
A vacuum gage article from the 1912 Compressed Air journal.
Ashton Valve vacuum gage and vacuum gage tester.
Trade show giveaways
Often at a industry trade show, the companies displaying their products will offer customers a little token gift as a thank you or a reminder of what they have to offer. Attached is a picture of some of those giveaways I've collected. The mirror (round with safety valve in middle) is about 3" in diameter. Everything else but the dry shaver is quarter size or smaller.
Wow. That is interesting. I never thought of such items ever being made.