Categories : Metrology Product , Surface Plate / Stand , Granite Surface Plate ,
Brand : CHOTEN
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Granite Surface Plates
Brand : CHOTEN
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A crystallin rock, has a fine grained, nonporous texture. It is crystallin throughout and the composition is hard and compact. Granite does not have the soft in-between spaces and has therefore a much higher wear resistance plus a higher degree of flatness accuracy.
The material strength of Surface Plate is three times greater than that of ordinary granite and is super rigid. This Surface Plate has a very low expansion coefficient (5 x 10-6 meter per degree), which makes it least responsive to temperature changes.
100 per cent corrosion-proof and acid resistant. Non-magnetic and easy to clean. No oiling required which is mandatory on cast iron surface plate and with non-glaring satin finish.
These plates are inspected through Electronic level Processing System of M/s. Wyler, Switzerland, to ensure the accuracy and flatness.
Plates are supplied with a calibration certificate traceable to National Standards showing graphic display of the fastness. The plates are manufactured by high precision lapping method providing 450 champering at edges & corners to avoid chip off and cracks.
| SIZES AVAILABLE | ||||
| Length | Width | Thickness | Accuracy as per IS-7327-1991 Grade ‘0’ | Approx. Weight in Kgs. |
| 400 mm | 400 mm | 60 mm | 4.5 um | 30 |
| 630 mm | 400 mm | 80 mm | 5.0 um | 65 |
| 630 mm | 630 mm | 80 mm | 5.0 um | 100 |
| 1000 mm | 630 mm | 150 mm | 6.0 um | 295 |
| 1000 mm | 1000 mm | 150 mm | 7.0 um | 470 |
| 1600 mm | 1000 mm | 200 mm | 8.0 um | 1000 |
| 2000 mm | 1000 mm | 200 mm | 9.5 um | 1300 |
