<p>Scans from 'Stokers' Manual 1912', the <a href="https://en.wikipedia.org/wiki/Royal_Navy" class="extiw" title="en:Royal Navy">Royal Navy</a>'s standard training handbook, "for engine-room ratings not entitled to the steam manuals and seamen under training in mechanical and stokehold work".
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See other images from this source in <a href="//commons.wikimedia.org/wiki/Category:Scans_from_%27Stokers%27_Manual_1912%27" title="Category:Scans from 'Stokers' Manual 1912'">Scans from 'Stokers' Manual 1912'</a>
HMSO
<cite class="book" style="font-style:normal">(January 1901, October 1907, this edition April 1912) <i> Stokers' Manual 1912</i>, Admiralty, via HMSO, via Eyre &amp; Spottiswoode  <small></small></cite>