- This page was last modified on 19 April 2017, at 21:55.
Image: Steam indicator (Steam and the Steam Engine - Land and Marine, 1875)
Original image (640 × 653 pixels, file size: 44 KB, MIME type: image/jpeg)
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).
Title: Steam indicator (Steam and the Steam Engine - Land and Marine, 1875)
Credit: Scan from Evers, Henry (1875) Steam and the Steam Engine: Land and Marine, Glasgow: Williams Collins
Author: Andy Dingley (scanner)
Permission: This work is in the public domain in its country of origin and other countries and areas where the copyright term is the author's life plus 70 years or less. You must also include a United States public domain tag to indicate why this work is in the public domain in the United States. Note that a few countries have copyright terms longer than 70 years: Mexico has 100 years, Jamaica has 95 years, Colombia has 80 years, and Guatemala and Samoa have 75 years. This image may not be in the public domain in these countries, which moreover do not implement the rule of the shorter term. Côte d'Ivoire has a general copyright term of 99 years and Honduras has 75 years, but they do implement the rule of the shorter term. Copyright may extend on works created by French who died for France in World War II (more information), Russians who served in the Eastern Front of World War II (known as the Great Patriotic War in Russia) and posthumously rehabilitated victims of Soviet repressions (more information). This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights.
Usage Terms: Public domain
License: Public domain
Attribution Required?: No