The Mycro is a Japanese miniature camera, manufactured by Akita Seisakusho Co. (transformed into Mycro Camera Co. Ltd from 1950) and launched on the market in 1939 in competition with another miniature camera, the Midget, which had appeared two years earlier and which used the same type of film.
From 1939 to 1953, when this Mycro IIIA appeared, there were up to eight models or variants of the original design, although without profound changes to the original design.
This Mycro IIIA uses 17.5 mm film in 14 x 14 mm format. It is a very nice camera, with a solid metal body lined in imitation leather, and the lens and shutter mounted in a tube attached to the camera body.
The lens is a Mycro Una 1:4.5 F= 20 mm fixed focus, with a diaphragm that allows apertures of 4.5, 5.6, 8 and 11 and an Everset shutter that allows speeds of 1/25, 1/50 and 1/100 and B position.