"R.H." wrote in message
. ..
Just posted another set:

http://puzzlephotos.blogspot.com/


Rob



345. A calculator that functions in a similar fashion to a circular
slide-rule.

346. The chisel part of a mortising tool. A drill bit goes down the
center. It is used to make square holes.

347. A puzzle. The objective is to remove the nut with the four handles.

348. A drill chuck key.

349. An electric motor. When I first made one of these, I was surprised
that the motor would still function even if the insulation was completely
stripped off of the coil's axle, rather than stripped only half way around
the axle.

350. A sling-shot handle.

Carl G.