Posting from Rec.crafts.metalworking as always.
2569) O.K. Two heavy duty ground terminals (binding posts (lower
corners, connected to the front plate.
Two heavier insulated terminals at the top.
Two lighter insulated terminals at the left hand side.
Pointer knob with 13 visible marked positions, and possibly
another under the tag hanging from right-most top binding post.
Pointer between two markings, suggesting that it is not a
detented switch -- unless the setscrew for the knob was loosened
and retightened off position.
Markings cover about the 270 degree arc which is common for
potentiometers (variable resistors), but the knob suggests that
it might be a Variac (or some other brand name) variable
autotransformer inside. If a Variac, it will be quite heavy,
though it could also have a separate power transformer in it
which is not obvious from the views we are shown.
Lacking any other markings, and any other views of the box (e.g.
the back or bottom might have a power cord, I'll have to assume
that whatever power it uses comes in between one of the ground
binding posts and one of the heavier top ones. The output,
then, would come out one or both of the left side binding posts,
either referenced to the ground binding posts, or to each other.
It could be for delivering an adjustable shock voltage to a
patient. Such were once believed to be beneficial.
It could be for adjusting signals to a pair of headphones, to
test hearing sensitivity.
Lots of other possibilities.
2570) Perhaps for splitting slate, or some other form of stone work?
2571) A ratcheting wrench for operating something like a valve whose
stem faces away. I don't see all of the ratcheting mechanism
(which looks like one which would be found on an old woodworking
drill brace.)
2572) Looks like a firearm which is enabled by a key -- perhaps
another form of jailer's key gun. If the key or the gun are
grabbed individually, they do not arm the inmates, but the
jailer, possessing both, is armed. Looks to be at least
multi-shot, and perhaps self-loading as well.
2573) Poultry shears. The notch is for cutting through bones.
2574) Perhaps not actually medical, but rather a seal used with
sealing wax to indicate that a bill has been paid.
Now to post this and see what others have suggested.
Enjoy,
DoN.
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