Prod. No.  15

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STEEL SQUARE 
WORKSHOP GRADE

Code

Blade Length Outer Edge

  inch mm
RSSW/1 2 50
RSSW/2 3 75
RSSW/3 4 100
RSSW/4 6 150
RSSW/5 8 200
RSSW/6 9 225
RSSW/7 10 250
RSSW/8 12 300
RSSW/9 18 450

STEEL SQUARE 
A GRADE AS PER BS 939 SPECS

Code

Blade Length From inner edge of beam to the end of the blade

Accuracy Limit for Square- ness
  inch mm mm micron
R939/1 2 50 0.010 10
R939/2 3 75 0.010 10
R939/3 4 100 0.015 15
R939/4 6 150 0.015 15
R939/5 8 200 0.015 15
R939/6 9 225 0.020 20
R939/7 10 250 0.020 20
R939/8 12 300 0.025 25
R939/9 18 450 0.040 40
R939/10 24 600 0.050 50