Ram 2 1/8″ dia. x 18″ stroke x 60 rpm. Working pressure 5000 psi.
The quality first and second photographs were located in 2018 from a batch of early photos, scanned and added to the page.
The third photograph illustrated was recovered from a poor-quality glass negative, digitally converted and enhanced.
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Click on the hyperlink to see other Notable Orders from the 1930s
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