Granite is the most widely used material for the.
Granite surface plate calibration procedure.
Surface plates are made of various types of granite they are massive stiff and hard.
The top work surface is lapped flat and smooth to provide a critical reference surface for many types of dimensional measurements.
Clean the granite surface plate prior to calibration.
Immediately dry the cleaner off the surface plate with a dry cloth.
Pour a small amount of surface plate cleaner on a clean soft cloth and wipe the surface of the granite.
They are used by tool rooms machine shops and inspection and calibration laboratories because of certain advantages that they have over steel surface plates.
Excluding those contained in other quality standards such as iso iec 17025 the minimum fed.
The quality of surface plates had been standardized for decades through the federal specification ggg p 463c.
There are two methods for inspecting surface plates the best method inspects overall flatness of the plate surface using an autocollimator.
Do not allow the cleaning liquid to air dry.
Surface plate this calibration procedure covers the inspection of surface plates.
For many shops inspection rooms and laboratories precision granite surface plates are relied on as the basis for accurate measurement.
Because every linear measurement depends on an accurate reference surface from which final dimensions are taken surface plates provide the best reference plane for work inspection and layout prior to machining.
All calibrations performed in the field are traceable to nist the national institute of standard and technology and are performed in accordance with documented and controlled procedures.
Your granite surface plate granite block granite table is the foundation of all accurate measurements optimal calibration has the ability to achieve extremely tight tolerances to ensure that your are getting the most precise measurements possible.
For each surface plate repair and calibration we provide detailed professional reports.
In this video we see the process for inspection and reconditioning granite surface plates.
This method is more complex and the necessary equipment is more expensive than the equipment used in the alternative method.
The plates are inspected and calibrated with an autocollimator and.
Surface plate calibration maintaining granite surface plates.
Requires most of the information we provided.
Place a repeat measuring gauge on the center of the granite surface plate.
We can certify your surface plate to grade aa laboratory grade grade a inspection grade or grade b toolroom grade.
Surface plates wear over time and must be properly maintained to ensure flatness and continued precision measurement.
