What is this Hasselblad Part
When I bought my 500C outfit, this was in the bottom of the box. It's obviously a crank, but I can't figure out just WHAT exactly it's used for. As can be seen, it has a tiny V inside a circle, so it is definitely a Hasselblad part. It's about the diameter of a quarter.
For reference, here's what all I got in the box:
500C body-1960-with WLF
80mm from 1961
50mm, 150mm, 250mm ranging from 1962-1964(looks like the original owner bought one lens a year after buying the initial outfit)
Any ideas for where it goes or what it does?
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