Granite angle ruler

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Granite square

Granite square

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Product Description: Granite square is suitable for testing verticality. The plane accuracy standard gb6092-85 and the perpendicularity standard gb6092-85 add holes to reduce weight and facilitate proce...
Tel: 13561283719

Granite square is suitable for testing verticality. The plane accuracy standard gb6092-85 and the perpendicularity standard gb6092-85 add holes to reduce weight and facilitate processing

granite square is made of "Jinan green" stone by mechanical processing and manual fine grinding. The marble square has black luster, fine structure, uniform texture, good stability, high strength and good hardness. The granite square can maintain appropriate accuracy under heavy load and general temperature. The marble square also has the advantages of non rust, non magnetization and constant type

how to inspect the granite square

1. When inspecting the accuracy of the granite square, first fix the granite square on the marble plate stably to keep its working surface horizontal, and select the appropriate inspection bridge slab according to the length of the working surface of the square (generally 8~10 steps, with a span of 50~500mm); Then place the bridge slab on the end of the marble square and fix the level on the bridge slab

2. The bridge slab is gradually moved from one end of the square to the other end according to the span. For each span moved, the position reading is read from the electronic level with a graduation of 0.001mm/m. The difference between the larger value and the smaller value is the straightness error of the working surface of the marble square. For the straightness error of any 200mm of the working face, the bridge slab of 50mm or 100mm can be selected, and it can be checked and determined within any 200mm according to the above method

3. When checking the perpendicularity of the two working surfaces of the granite square, first place the ruler on the fine marble plate, so that the base equipped with a dial indicator with a division value of 0.001mm passes through the standard round bar, and zero on the standard marble square box. Then, in the same way, make the meter base close to the other working surface of the marble square, and the reading of the dial indicator is the Perpendicularity Error of the side. The perpendicularity of the granite square takes a large error value

to test the accuracy of granite square, we should pay attention to every step. Whether it is the fixation of marble square or the calibration of marble square, we need to have a relatively complete understanding of granite square, so that it will be accurate in the process of actual operation, and the use of marble square is relatively extensive


               
 
  • Tel:+86-13561283719

  • E-mail:ruijing@ruijingsd.com

  • Contact:Manager Su

  • Address:West head of zhaozhaizi village, zhaozhaizi Town, Gaotang County

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