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1, the standard measuring tool
Measured as a measuring or verification standard. Such as measuring blocks, faceted prisms, and surface roughness specimens. Measuring tool
2, universal measuring tools
Also called energy equipment. Generally refers to a universal measuring tool uniformly manufactured by a measuring tool factory. Such as ruler, tablet, angle block, caliper and so on. CNC milling copper electroplate part OEM&ODM
3, special measuring tools
Also known as non-standard gauges. Refers to a gage that is designed and manufactured to measure a certain technical parameter of the workpiece. For example, measuring tools such as internal and external groove calipers, wire calipers, and step gauges are recurring measurements in a fixed form.
Features are as follows
1, itself directly reproduce the unit value, that is, the nominal value of the measuring tool is the actual size of the unit value, if the gauge block itself reproduces the length of the unit.
2. There is generally no measuring mechanism in the structure, no indicators or moving parts. If the gauge block is just a physical representation of the unit value.
3, because there is no measuring mechanism, if you do not rely on other equipped measuring instruments, you cannot directly measure the measured value. For example, a gauge block is equipped with an interferometer and an optical meter. Therefore it is a passive measuring instrument.