Title: |
1918 Ad-Ashton Valve Co., Steam Saftey Valves, Dead Weight Tester & Pressure Gages |
Source: |
Mechanical Engineers Catalog and Product Directory, V8, 1918, pg. 526 |
Insert Date: |
5/1/2020 4:29:52 PM |
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1918 Ashton Valve Co., Steam Saftey Valves, Dead Weight Tester & Pressure Gages
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