• 18 Aluminum Straight Edge 1/8 & 1/16• Heavy Duty extruded aluminum straight edge• Screened, thermal-bonded increments graduations in 1/8" and 1/16" (J96 reads same direction)• Bold, easy to read graduations and numbers• Clear protective anodized finish• EM models feature screened, thermal-bonded black graduations in 1/8", 1/16" and 2mm• Models: J18 18" Aluminum Straight Edge, J24 24" Aluminum Straight Edge, J36 36" Aluminum Straight Edge, J48 48" Aluminum Straight Edge, J60 60" Aluminum Straight Edge, J72 72" Aluminum Straight Edge, J96 96" Aluminum Straight Edge