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Machinery Photo Index
Manufactured/Badged by:
Ashton Valve Co.
Boston, MA; Cambridge, MA

True Manufacturer:
Ashton Valve Co., Boston, MA; Cambridge, MA
Machine Specifications
Machine Class: Steam and Gas Engines
Machine Type: Engine, Steam - Traction
Machine Size: 6" diameter
Submitted By: Rick Ashton
Machine Specifications
Description/Model: Caisson gauge
Date of Manufacturer:
Serial Number:
Last Updated 4/28/2020 3:10:45 PM

Comments:
The Caisson gauge is used when working underwater in pressurized air. It allows one to see that the air pressure is ok for the depth being worked at.

https://en.wikipedia.org/wiki/Caisson_(engineering)

https://civiltoday.com/geotechnical-engineering/foundation-engineering/deep-foundation/152-caisson-foundation

Photo 1:

Comments: Caisson Gauge
Source: personal collection
Direct Link
IMG Code

Photo 2:

Comments: 1920 catalog page
Source: personal collection
Direct Link
IMG Code

Photo 3:

Comments: 1920 catalog page
Source: personal collection
Direct Link
IMG Code