Posting from the usenet newsgroup rec.crafts.metalworking as always.
3121) A current-measuring shunt resistor.
The current is applied to the two large binding posts and goes
directly into the ribbon of metal.
The two small binding posts are connected to the ribbon via what
appears to be spot welds (the small wires about an inch from
each large binding post).
The position of the spot welds is to set a precise resistance so
you have a precise voltage across the small binding posts for a
Most current shunts are for 50 mV at the full rated current, but
this looks like a significantly larger resistance for the
current capability of the metal ribbon and thus a higher
voltage. It might be as high as 1V at fullrated current, which
suggests that it was also used in circuits with relatively high
3122) This looks like part of an early and special purpose color
TV camera. Each lens focuses onto a different B&W videcon,
through a different color filter, and the different apertures
are to balance out the relative light loss in the filters.
If the lenses were larger and more widely spaced, I would think
that it was an early projection TV -- back when there were three
different CRTs, each with a different color phosphor.
At a guess, this was for converting movie film to video tape.
3123) This looks like a throttle lever for a multi-engine aircraft.
3124) A "Necker's Knob". It clamps onto a steering wheel allowing
the driver to steer with a single hand, while the other arm is
around his girlfriend.
They were common in the 1950s and maybe the early 1960s.
These were reputed to be rather dangerous in use.
3125) No real idea. A second view might help. It sort of looks like
there is a half cylinder behind the jaws to hold something. if
the teeth were staggered, I would think that it might be to
perforate something. It might be for something like breaking a
poker chip in half.
3126) Strange. It at first looks like a flash hider for a weapon,
except that the part which would slide over the barrel is
occupied by something else, which sort of looks like a wrench
for removing some part of the same weapon (the hex hole).
The color looks like Army battle gear of some sort.
But I *think* that is is some kind of flame torch. The fuel is
put into a part in the hex hole, which squirts the fuel into
the tube, where it is ignited. The holes surrounding the end
feed in more air to increase the burning rate near the point of
Perhaps part of a flame thrower.
Now to post this and then see what others have suggested.
Sounds like a good answer to me but I'm still looking for a reference.
The rest of this week's set have been properly identified:
If the resistor looks familiar it's because I posted it once before around seven
I'll bet that you could get the information from GE, since it
has the part numbers on it.
Oh -- before I started posting in this thread, I think. Anyway,
the resistance and current on that support my interpretation there --
the full-scale voltage is significantly higher than most modern shunts
(which aim for 50 mV full scale. This one is 1.5 V full scale, (or 1500
mV if you prefer).
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