IC Enlarger Timer lens mount_Leica R probably made for the Japanese

probably made for the Japanese market

or adapt it to pretty much anything else (except Nikon F

If you want your camera to spin around on its own for whatever reason

This is a vintage Kodak contact printing frame for 4x5 (or smaller) negatives

IC Enlarger Timer lens mount_Leica R probably made for the JapaneseIt's much harder to explain the IC Enlarger Timer than it is to use it: there are three dials, marked in 10, 1, and 0. 1s increments, and you set your desired time by turning each dial to add up to the appropriate number. For example, if you wanted to set a time of 13. 5 seconds, you'd set the first dial to 10, the second dial to 3, and the third dial to 0. 5. It's math! Anyway, not sure if I made that more or less confusing, but trust me, it's easy