Engraved with letters representing both the cardinal points including top and bottom, the meteorite scale cube is a reference tool used to determine dimensions and the relative position of an object.
It is used primarily for the photographic documentation of historic artifacts and natural objects, more prevalent in meteorite photography.
Although its origins are still a mystery, the meteorite scale cube is believed to have originated from NASA (no official word though).
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The one inch cube does seem to be close enough to one inch. The 3cm and 5cm cubes are quite a bit off.
ReplyDeleteProbably a scaling issue when they went from whatever they used to make the artwork to PDF format. I've had this happen to me.