In some parts where the steel tape measure cannot be used directly, you can use a steel ruler or a right angle ruler to align the zero scale with the measurement point, and the ruler body is consistent with the measurement direction, and the distance to a certain end of the steel ruler or right angle ruler can be measured with the tape measure to read directly. When measuring, the zero scale of the steel tape cattle weight tape measure is aligned with the starting point of the measurement, and the appropriate pulling force is applied to directly read the scale corresponding to the measurement end point; The tape measure should be measured with the "0" point end as the measurement reference, which is convenient for reading. When measuring items based on non-"0" point ends, pay special fish measuring tape attention to the numbers at the beginning, otherwise they are easy to mispronounce when reading.
1. Check whether the certificate of conformity label of the steel tape measure is clear before measurement to confirm whether the tape measure is within the validity period, and the tape measure that is not within the validity period or the label is not clear is prohibited.
2. The starting end of the measured workpiece should have no burr to ensure the accuracy of the measurement.
3. There shall be no rust and obvious spots and scratches on the surface of the ruler belt, and the lines should be very clear.
4. Check the various parts of the tape measure, when pulling out and putting into the tape measure, it should be light, flexible and no jamming; When braking, the button device of the tape measure should be able to effectively control the tape winding, and there must be no block failure.
5. The ruler belt can only be rolled and cannot be folded; When using a tape measure, pull out the ruler belt without too much force, but should be slowly pulled out, and after use, it should be slowly returned; When braking the tape measure, you should first press the brake button, then slowly pull out the ruler belt, press the brake button after use, and the tape will automatically wind up; When the tape is automatically retracted, the tape should be prevented from hurting people.
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