Granite cubes, prisms and parallelepipedons

CU: CUBES IN BLACK GRANITE

Manufactured with either two, four or six lapped, plane and parallel surfaces.

See table for dimensions and tolerances.
With threaded holes on all faces on request.


Each instrument supplied by "Microplan" has
a complete Test Report with error maps, tolerances, graphic and instructions for assembly and installation.

Different size and tolerances on request.

PR: BLACK GRANIT PRISMS

Ideal for testing cylinders.
The tolerances in the table (in thousandths of a millimetres) refer to the flatness of the base and the parallelism between the base and the axis of the V-shaped groove.

On request, other faces can be lapped.

PL: BLACK GRANITE PARALLELEPIPED

Its square form ensures greater stability with respect to the set squares while the use of the third side allows a surer testing of the angle error. Three faces lapped perpendicular each other and the upper base.

Three adjustable feet are fitted to the lateral face. It is provided with a hole for lightening in the middle.

It is suitable for the squareness testings on measuring instruments and machine tools.

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