Science Art: Fig. 100 (Outside-Spring Indicator) from Steam-engine Theory and Practice by William Ripper, 1922
Entered By: grant on September 9, 2012
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This, the text tells me, is an “outside-spring indicator, by Messrs. Elliott Bros.” The spring is not exposed to high temperature, which makes it better for indicating. I’m not sure what, but I imagine it has to do with pressure.
As well as the wonderful Steam-engine Theory and Practice, Mr. William Ripper was apparently the author of the intriguingly titled Heat Engines. I’m imagining that one makes for a fun winter’s read.
Tags: engineering
