- Natural granite is free from deterioration or dimensional change over time.
- Black Granite Plate’s most distinctive feature is its hardness, twice that of cast iron.
- Free from wringing effects, so there is no interruption of work.
- Since granite is harder, finer grained, and more brittle than cast iron it does not throw up burrs or protrusions if scratched. (See Figure 1.) This ensures a high degree of flatness with no risk of damaging instruments or workpieces.
- Use these plates in a stable temperatureenvironment. Since flatness error occurs when there is a temperature difference between the working surface and the underside, avoid working in direct sunlight. Also, do not place a plate in the vicinity of an air conditioner or heater.
(Recommended environment: Temperature 20+1 C, Humidity 58+2%)
Mitutoyo
Black Granite Surface Plates SERIES 517
Black Granite Surface Plates – Natural granite is free from deterioration or dimensional change over time.
