Aldis Signal/Spot Light Kit and Lenses Ref No 5A/823 RCAF 1940-43 KC-97 The compass frame is shock-mounted

The compass frame is shock-mounted to absorbed bumpy flight conditions

all in good condition

5 x 7 inches

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

Aldis Signal/Spot Light Kit and Lenses Ref No 5A/823 RCAF 1940-43 KC-97 The compass frame is shock-mountedHere 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