These calipers are for finding the center of objects… the central arm always points to the central point between the outer arms. The central arm can slide up an down, so the tips can all be in a single plane… although it is possible to bisect irregularly shaped objects as well
They are made from brushed, stainless steel, with adjustable allen-key bolts.
They come with a laser-cut, magnet-equipped case. The dark hardboard ones come as standard, but other options are available as well.
For an extra $10 I can put your logo on the case – if you send me a file, I’ll send back a mockup image.