THORLABS BHM3 Magnetic Beam Height Rulers (30 mm x 160 mm. 6")

Ruler Surface Dimensions (W x H): 30 mm x 160 mm (1.18" x 6.30")

Footprint (L x W): 20 mm x 30 mm (0.79" x 1.18")

Thickness: 2.0 mm (0.8")

Numbered Graduations: Every 1" and 10 mm

Graduations: 1/16" and 1.0 mm

Hole Spacing: 1.00" and 25.0 mm

Damage Threshold: >350 J/cm2 (1064 nm, 20 ns, 20 Hz, Ø1.14 mm)