L-Shaped Scale, 180 x 450mm, Clear

Made to rigid FBI specifications, this L-Shaped scale provides maximum contrast by featuring black markings on a clear background. Alternating black and clear bands provide an excellent visual reference from a distance and crosshairs at each end provide a means for checking and correcting perspective distortion
FEATURES

• Features black marking on a clear background
• Alternating black and clear bands provide excellent visual reference
• Will always provide an exact 90° scale