Here is a Vintage Steel 4.75" Ashcroft Vacuum Pressure Gauge Works Build Steampunk Projects.
This gauge works, you can pull your own vacuum with just sucking on the valve, other than that I don't know how accurate it is but it moves. The glass lens cover is broken, but the insides of the gauge are fine and fairly clean. The other writing in the gauge is "1/2 in SUBD and the gauge is marked from 0 to 30. It has about 1/2" flange on the backside so it can be attached to a wall or whatever. It will ship out at 3 lbs.
Thanks for looking
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