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File:Steam indicator (Steam and the Steam Engine - Land and Marine, 1875).jpg

Summary

Description Steam indicator of the Richard's type, similar to the later and more commonly seen Dobbie Mc Innes type. Used to accurately measure the performance of steam engines by plotting a graph of pressure against piston position (and thus volume).
Date c. 1875
Source Scan from Evers, Henry (1875) Steam and the Steam Engine: Land and Marine, Glasgow: Williams Collins
Author Andy Dingley (scanner)
Permission
( Reusing this file)
Public domain This image (or other media file) is in the public domain because its copyright has expired.

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