Cast iron foot rectangular: square class of special tools, including the feet, bending 90 ° for the vertical test of machine tools, machinery and equipment and parts, install the processing position, crossed an important measurement tool in the machinery industry, it is characterized by high precision, good stability, ease of maintenance. 
 Foot rectangular cast iron: GB6092-85 standard manufacturing, material HT200-250 is mainly used for the inspection and marking of the workpiece at right angles, in the installation and adjusting of equipment, inspection of parts or components on the surface of the verticality. 
 Cast iron rectangular device: the measurement surface and the base surface is perpendicular to the measuring instruments for inspection at right angles, squareness and parallelism errors, also known as Square 90 °, rectangular device, vertical flat-foot, cast iron vertical flat foot, the right angle on foot 90 ° Square. 


 Specifications mm measuring face based on the vertical 
 Face flatness or straightness 
 Base flatness or straightness 

 Accuracy rating um 

 0 
 A 
 2 
 0 
 A 
 2 
 0 
 A 
 2 












 300 × 200 
 6 
 11 
 22 
 2 
 4 
 7 
 3 
 6 
 11 

 400 × 300 
 7 
 12 
 25 
 2 
 4 
 8 
 3.5 
 7 
 12 

 500 × 350 
 8 
 15 
 30 
 2.5 
 5 
 10 
 4 
 8 
 15 

 630 × 400 
 9 
 18 
 35 
 3 
 6 
 12 
 4.5 
 9 
 18 

 800 × 500 
 10 
 20 
 40 
 3 
 7 
 14 
 5 
 10 
 20 

 1000 × 630 
 12 
 25 
 50 
 4 
 8 
 16 
 6 
 12 
 25 

 1250 × 800 
 15 
 30 
 60 
 5 
 10 
 20 
 8 
 15 
 30 

 1500 × 1000 
 18 
 38 
 70 
 6 
 12 
 24 
 10 
 18 
 35 


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