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StanoSitar 15/11/2019
As the description clearly states the caliper is made from plastic. So do not expect level of stiffness similar to the steel version. The caliper jaws have about 0.3 mm gap at the tip (about 10mm length from the tip). This could be carefuly sanded down. Plus, if you use even small force to close caliper jaws around measured object, especially at the tip, the whole caliper flexes and the dimension can change 0 to +0.5mm. The main sliding rail has not solid cross-section but has ribs on the underside. Do not expect luxury carbon-fiber composite with epoxy, as the name might suggest. It is made from a simple (and relatively stiff) black plastic that [they claim] is internally reinforced with carbon fiber (please note, this would be difficult to confirm for the end-user without destructive testing). I have closed the calipers carefuly and zeroed the distance. Then I have measured 25mm and 50mm etalon that was supplied with an industrial quality (old time) analogue micrometer. This caliper measured 24.9 and 49.5mm respectively. This is within declared precision grade. The display shows milimeters to one decimal place. I was hoping for more, but I can't complain. You get what you pay for in this case. There are also more precise calipers on sale, but not this combination of size and price-range. I am going to use this caliper as a cheap DRO (digital readout) for the movement of my support on my small lathe, so I do not worry about jaws flexing when measuring things.
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