Double Dual Twin Beam 18" Dial HEIGHT GAGE .001'' Digital Digit Counter Gauge 18" Dial Height Gage Double beam ; Range 0-18" ; Dial graduation: 0.001" ; Counter Reading: 0.1" Dual directional mechanical digital counters can be zero set at any position within the range Error-proof digital counter features a zero-reset button ; Fine-adjusting wheel and lock Quantity: 1 ; Unit overall dimension: 4-3/8''L x 9-3/4''W x 25-3/8"H