Ok I have acquired a custom made wooden box from Polaroid.
on the top it reads 4X5" END CAP WIDTH MASTERS
with an ID number of ID9636
there are 3 lower labeled markers .100 LOW LIMIT , .110 NORMAL and
.120 HIGH LIMIT
when the box is opened there are 3 metal items enclosed which also bare these numbers only on their tops to mark which one goes into which appropriate bay.
in the top right hand corner of the boxes top it reads POLAROID CORPORATION FILM DEVISION INSTRUMENTATION IT. NO 001096
there is also a calibration sticker which reads
the metal plates/blades inside each weigh 305 grams and measure 2inchesx4.5inches by 0.35 inches thick (at their thickest end)
the plates also revealed an odd property when being weighed they revealed to be highly magnetic being able to support their own weight.
any suggestions as to what these were used for? I am ultra curious about this object.
ONE ADDITIONAL NOTE. it may be important that there is one difference in the 3 metal items and it isn't really able to be shown via photographing them and posting it on apug. but all three of these metal items have the metal cut in the same way but the final ridge on the metal where it tapers off to a point varies and it varies by the o.1 of a millimeter. It is an ultra precise variant in the way the metal is shaped.
it required very careful and close observation for me to learn this.