I have a slightly broken Stanley #702, and
a intact Stanley #7502.

The #702 appears to be an Al
version of the #700.

The #5702 is a little bigger, with an extra guide rail.

Does anyone have any catalogue (or other)
photographs or text describing
the intended customers, and mode
of use of these things?

Playing with them on my bench has
caused far more confusion than enlightenment.

   BugBear

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