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These handy flats are small precision surface plates that are ideal for many inspection and checking uses throughout the plant.
They are especially well suited for layout work and offer an easy, portable reference for gaging small parts.
Offered in Crystal Pink® or Black Granite, Starrett
Toolmakers' Flats are 12" long x 8" wide x 2" thick (300 x 200 x 50mm) and finished to an overall tolerance of .0001" (0.0025mm).
The shipping weight without case is 20 lb (9kg).
Toolmakers' Flats Description
Crystal Pink Granite Black Granite
Sturdy Felt Lined Case for Toolmakers' Flat EDP
81803 81802 81804
THREE-FACE GRANITE TRI-SQUARES
Three-Face Granite Tri-Squares provide an excellent, economical way for accurately checking the X-Y-Z axes on CNC machine tools and coordinate measuring machines.
Lying in the horizontal position, the X and Y axes can be checked for 90º squareness. With the square in the vertical position, tracing along the vertical edge of the square can check the perpendicularity of the Z axis.
Granite tri-squares may also be used in the same manner that steel squares would be used for the direct checking of squareness and straightness.
Three-Face Granite Tri-Squares Dimensions
Length x Height x Thickness Inch mm
Weight Lb kg Accuracy Grade – EDP
AA Laboratory .000025"/6" TIR (0.0006/150mm)
6 x 9 x 3 150 x 225 x 75 18 8 81969 9 x 12 x 3 225 x 300 x 75 23 10 81961 12 x 18 x 4 300 x 450 x 100 60 27 81964 18 x 24 x 4 450 x 600 x 100 120 54 81967 24 x 36 x 6 600 x 900 x 150 570 259 81971 Other sizes quoted on application.
A Inspection .000050"/6" TIR (0.0012/150mm)