Black conical shaped plastic casing with window showing temperature scale ranging from 800 to 1250 degrees Celsius. Also through window can be seen UK patent number; "636544", the US patent number; "2750837" and the German "patent pending" notice.…
Small silver monocular with 3 prisms which can be angled away from the objective. Engraved on the monocular barrel. The prisms are engraved and on the underside. In leather pouch.
Black metal apparatus; two individual scales measuring 'knots' and 'MPH'; scales look like glass thermometers - right hand dial 0-150 and left hand dial 150- 550 mph; converts pressure into speed; serial no 81; ref no 6C/85