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| Granite Surface Plates meet IS.7327 - 1991 for flatness. Granite surface Plates are manufactured to precision standards using the highest quality granite. | |||||||||
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| ACCURACY | |||||||||
Rigourous quality control inspection is carried out all stages. Final inspection is carried out by a high Precision Computerised Electronic Level. Â | |||||||||
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| ACCURACY UNDER LOAD | |||||||||
| Granite Surface Plates are capable of supporting a total normal load of 25 kgs. Per 0.1. Sq. mtr. | |||||||||
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| CERTIFICATE | |||||||||
A certificate of accuracy is supplied with each plate as per IS: 7327 - 1991 Â | |||||||||
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| TECHNICAL DATA | |||||||||
Granite Surface Plates are manufactured in Four Grades. The typical applicaton of these four grades of plates are as under. | |||||||||
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| GRADE 00Â is of laboratory grade. It is specified for precision measurement in gauge rooms and metrology laboratories. | |||||||||
| GRADE 0Â is of inspection grade. It is specified for general work in quality control. | |||||||||
| GRADE 1Â is of tool room grade. It is specified for production checking work through the shop. | |||||||||
GRADE 2Â is for use in shops for general inspection. Â | |||||||||
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| MATERIAL | |||||||||
Granite Surface Plates are made from seiect granite with uniform distribution of light and dark constituents. In such granite the minerals are evenly distributed resulting in a homogenous appearance. The following are the representative properties of our granites. Â
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| SIZE OF PLATE | FLATNESS TOLERANCE IN um, FOR ACCURACY GRADE | ||||
| 00 | 0 | 1 | 2 | Weight in Kgs (approx) | |
250 X 250 | 2 | 5 | 12 | 25 | 10 |
300 X 300 | 2 | 5 | 13 | 26 | 22 |
400 X 250 | 3 | 5 | 14 | 28 | 20 |
400 X 400 | 3 | 6 | 14 | 28 | 40 |
500 X 300 | 3 | 6 | 15 | 30 | 35 |
630 X 400 | 3 | 7 | 18 | 32 | 65 |
630 X 630 | 3 | 7 | 18 | 32 | 100 |
800 X 500 | 4 | 7 | 18 | 36 | 120 |
1000 X 630 | 4 | 8 | 20 | 40 | 320 |
1000 X1000 | 4 | 8 | 20 | 40 | 500 |
1200 X 800 | 5 | 8 | 22 | 44 | 475 |
1600 X 1000 | 5 | 10 | 26 | 52 | 1100 |
2000 X 1000 | 6 | 12 | 30 | 60 | 1650 |
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