Starrett 150 mm, 5-3/4in Combination Square

This 150mm/5 3/4 in. combination square is sub-divided to 1/64in. and 1mm on channel side, 1/32in. and 0.5mm on plain side.,The square head is manufactured from cast iron with precision machined 90° face and a 45° mitre face.,The head locates, slides and locks onto the rule for right angle marking, try square work and the marking and checking of 45° mitres.