GMT GRANITE TRI SQUARE

Made of Indian Black Granite and provided with through-holes for weight reduction and ease of handling. All 6 sides are lapped to maintain flatness, squareness and parallelism. 

GMT Granite Tri-Squares provide an excellent, economical way for accurately checking the X-Y-Z axes on CNC machines, milling machines, coordinate measuring machines. 

Lying in the horizontal position, (on surface 3 or 4) the X and Y axes can be checked for 90° squareness. With the square in the vertical position, tracing along the vertical edge of the square can check the perpendicularity of the Z axis.Tri-Squares have 6 finished faces.

Custom sizes can be supplied upon request.

Accessories  Wooden case.

SPECIFICATIONS

Dimensions (mm)	Thickness	Weight (Kg)	Grade 0
Small Length x Width			(µ)
300 x 200	70	10	3
400 x 200	70	13	3
500 x 200	70	15	5
630 x 400	75	26	5
800 x 500	90	70	5
1000 x 630	120	140	10

GMT GRANITE MASTER SQUARE

GRANITE MASTER SQUARE 

 

Made of fine black, Metrology Grade Granite, GMT 6-Face Master Squares may  be used for  checking of squareness or parallelism. Master squares have 6 finished faces . One large square face is finished flat and perpendicular to the four sides, which are parallel and perpendicular to one another.

The working surfaces are ground and lapped parallel to each other, remaining sides are polished. They are provided with through-holes for weight reduction and ease of handling.
GMT 6-Face Granite Master Squares are ideal for accurately checking the X-Y-Z axes on CNC machine tools and coordinate measuring machines (CMM).

With the square in the horizontal position, the X and Y axes can be checked for 90° squareness. With the square in the vertical position, tracing along the vertical edge of the square can check the perpendicularity of the Z axis. By tracing along the top edge of the square while in the vertical position, it will check parallelism to the table in the X and Y axes.

Custom sizes are also available on request.
Accessories: Wooden case.