T Square TT15
TT15/18
TT15/36
TT15/48
Aluminium T-Square
18"/450mm
36"/915mm
48"/1220mm
Hard tempered aluminium blade, 50mm wide and securely attached
to an aluminium head
Graduations are in 32nds for the first inch and in 16ths for the rest
of the length on the top
The bottom has half-millimetres for the first centimetre and millimetres
for the rest of the length