What Is A Granite Surface Plate Used For

The surface plate is often used as the baseline for all measurements to a workpiece therefore one primary surface is finished extremely flat with tolerances below 11 5 μm or 0 0115 mm per 2960 mm for a grade 0 plate.

What is a granite surface plate used for.

As the name suggests a surface plate refers to a plate having a perfectly flat surface which is manufactured out of cast iron normally having a rectangular shape. Used granite surface plates 142 listings. Use grade aa laboratory plates for precision operations in constant temperature gaging rooms and metrology departments. Granite surface plate 18 x 24 granite surface plate 18 x 24 kentwood mi usa.

Our granite surface plates are manufactured in three ledge types as well as standard sizes and grades. 18 x 12 x 3 1 2 h. Plates that have ledges are used for clamping purposes only. Solid granite surface plate and angle plates are used for precision layout inspection and tooling setup.

The granite used for surface plates has an excellent distribution of hard quartz which provides a smooth long wearing working surface. Plates with two ledges are used to hold fixtures and instruments with clamps. Granite 0 ledge 48 x 36 x 6 precision surface plate w adjustable steel stand. The foundation of precision measurement is the surface plate.

Granite surface plate maintenance may be easy but it is still important to perform regular checks and cleaning. Final inspection and calibration of every surface plate is accomplished by use of the auto collimeter. The properties of granite such as weight resistance and durability create a super smooth surface that is easy to maintain. The bottom side of the plate has several stiffening ribs and there are two handles on either side which are used to lift and shift the surface plate.

B this is a toolroom grade granite surface. The surface plate is a massive solid structure highly rigid in design which is having a true flatness of the surface. Construction of surface plate required material properties to make materials used to make surface plates cast iron surface plate granite surface plates glass surface plates. All of the granite we use has been carefully measured to establish the modulus of elasticity allowing us to comply and exceed federal specifications and user requirements.

Laboratory grade aa plates are for precision quality control work. Read full article here. The granite used in a granite surface plate is graded by quality with these four levels of quality. Granite surface plates meet or exceed federal specifications ggg p463.

Granite surface plates are considered the more superior material compared to cast iron surfaces. A this is an inspection grade granite surface. Inspection grade a plates are for general quality control work. A surface plate is a solid flat plate used as the main horizontal reference plane for precision inspection marking out layout and tooling setup.