Ludwig Precision Aluminum T-Square 1 1/2" x 18", Standard (82018)

Ludwig Precision T-squares feature hard tempered aluminum blades securely riveted to a super rugged black plastic T-head. These T-heads possess high impact strength. Standard T-squares are made from extruded aluminum and are calibrated to 32nds through the first 6" on the top edge, cm and mm calibrations along the bottom edge. The 12" plastic head is attached with 4 rivets and calibrated out to 4" on each side of the blade. Heavy duty T-squares are made from extruded aluminum and are calibrated to 32nds through the first 6" along the top edge, cm and mm calibrations along the bottom edge. The extra-wide 14" head is attached with 5 rivets and calibrated to 5" on each side of the blade.