Common distance measurement methods include tape measure and photoelectric distance measurement. Tape measure is to use a tape measure that can be rolled up / test big / along the ground measurement, belong to direct distance measurement. Photoelectric distance measurement is to use the instrument to transmit and receive modulated light waves between two points to determine the distance according to its propagation speed and time, which is electrophysical distance measurement. Optical distance measurement belongs to indirect distance measurement.
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Tape measure is a common tool used in daily life.
Standard steel tape measure Tape measure is a common tool used in daily life. We often see one of the necessary tools for families. Steel tape measure is a common tool for construction and decoration.
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Steel tape measure can be divided into three kinds according to its use
Measure the size or distance of a long workpiece. It is a common tool in daily life. We often see the steel tape measure, building and decoration commonly used, is also one of the family * tools.
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