Semi-flexible stainless steel ruler has engraved calibrations,
with inch on one side and metric on the other. Heavy duty ruler is 1/32" thick.
1-3" is in 32nds, 3"to 4" in 64ths, the remainder of the ruler is in 16ths. Ideal
for mechanics, drafters and students. Rounded top edge with hang hole, square
end edge. Width is 1-1/8" wide on the 18 and 24 inch, and the 12 inch is 1"