The most common thing to do in some work and study is to measure the length, width and distance. The steel ruler is the most basic and important measurement tool used by the decoration workers for measurement. In addition, the steel ruler is also used in other fields. For example, the steel ruler is used when the designer draws the drawings, the steel ruler is also used during the learning process, and the carpenter master also uses the steel ruler when making furniture. . What about the price of steel rulers?
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Steel ruler price
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Shida (SATA) 91402 steel ruler 300MM: ï¿¥ 8.50
Deli 8463 stainless steel ruler / scale 30cm: ï¿¥ 8.00
Tango (TANGO) stainless steel ruler / scale / student ruler 50cm widened thickened double-sided scale stainless steel ruler: ¥ 9.90
European standard (MATE-IST) measuring ruler 30CM stainless steel ruler office supplies B2488: ï¿¥ 5.00
Paola stainless steel ruler / scale 30cm metric scale drawing steel ruler 5352: $ 7.80
Deli steel ruler stainless steel measuring tool 15/20 / 30cm / 50cm centimeter thickened steel ruler 15cm8461: ï¿¥ 3.00
Fortune Friends Stainless Steel Ruler 30cm Steel Ruler 20cm Office Stationery Good Drawing Assistant 50cm / piece: ï¿¥ 12.80
Chenguang (M & G) ARL96119 / 96120 steel ruler student 200mm / 300mm stainless steel ruler 30cm: ï¿¥ 7.00
Note: The above prices are all from the Internet, for reference only
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　 Steel ruler measurement method
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Before using a steel ruler, you need to check whether the edges and scales of the steel ruler are intact and accurate. At the same time, you must ensure that the surface of the steel ruler and the measured object are clean and flat, and cannot be bent or deformed. When measuring with a steel ruler, the zero scale to be selected coincides with the starting point of the measured object, and the steel ruler is closely attached to the measured object, so that the accuracy of the measurement can be increased; the ruler can also be After turning 180 degrees, make another measurement, and then take the average of the two measured results, so that the deviation of the steel ruler itself can be eliminated.
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　 Precautions for using steel ruler
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1. Before using the steel ruler, check all parts of the steel ruler for damage, and no appearance defects that affect the performance of the use are allowed, such as bending, scratches, broken scales, or unclear scale lines ;
2. Steel rulers with hanging holes must be cleaned with clean cotton thread after use, and then hung up to make them droop naturally. If there is no hanging hole, wipe the steel ruler flat on a flat plate, platform or flat ruler to prevent it from being deformed by compression ;
3. If it is not used for a long time, the steel ruler should be coated with anti-rust oil. The storage place should be a place with low temperature and low humidity.
The above is the content about steel ruler price introduced to friends. When you use a steel ruler to measure the diameter of a cylindrical circular section, the end of the steel ruler should be tangent to the edge of the measured surface, and then swing the steel ruler left and right to find the maximum size, which is the measured circle Diameter size.
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