Introduced before the likes of still-made Minox miniature cameras, the Minolta 16QT was introduced in 1972. Constructed from a combination of metal and plastic, it measured a mere 28 x 44 x 108mm and weighed just 130g. It could take 18 frames on its 16mm film cartridge, which could also be reloaded with 16mm film stock, althought the negative area would then be reduced from 12 x 17mm to 10 x 17mm because of the sprocket holes. A direct-view optical viewfinder was combined with the fixed 23mm f3.5 lens protected by a sliding cover. Aperture was infinitely variable from f3.5 to f22 and focus was manual using 4 symbols; a sync socket allowed flash sync with the inter-lens shutter across the whole range of speeds: 1/30 to 1/250; light was measured by an external CdS meter.
There was even a special projector for 16mm slides.
A useful resoure of info on miniature cameras is http://clubs.yahoo.com/clubs/subminiaturephotography
Unfortunately, Minolta used the AutoPak name to refer to both 126- and 110-format cameras.
This photos shows the 110-format Autopak 460T.
Here are the 126-format AutoPaks:
AutoPak 400X
AutoPak 500
AutoPak 550
AutoPak 600X
AutoPak 700
AutoPak 800
All the others would have been 110-format. The 700 (126) was a very nice camera with hot shoe, rangefinder, etc., and looked a lot like the Minolta 24 Rapid from that period. All the 126 AutoPaks had f2.8 38 mm lenses {info and photo supplied by David Francis}; model 600X {20 UKP 1/99} had zone focussing.