Aldis Signal/Spot Light Kit and Lenses Ref No 5A/823 RCAF 1940-43 KC-97 It appears that they also

It appears that they also published technical references and catalogs such as this in an effort to expand their service offerings to their customers

perhaps evidence of its use in the US Navy's version of the B-17

made by the British aircraft instrument manufacturer Smiths

This booklet contains fundamentals and tips for pilots of fighters and bombers on offensive and defensive tactics in preparation for or when encountering the enemy

Aldis Signal/Spot Light Kit and Lenses Ref No 5A/823 RCAF 1940-43 KC-97 It appears that they alsoHere is an original WWII era Aldis Signal Light Kit as used by the Royal Canadian Air Force. The light was used either as a spotlight (by squeezing and holding the large trigger) or as a signal light (by squeezing the small trigger, which altered the angle of the projected light) to transmit Morse code. Atop the light housing is a tubular sight to ensure that the light is aimed at the intended recipient to ensure accurate interpretation of any Morse