The Gecko Gauge SA903 gauges and supports fiber cement-board siding, including James Hardie's HZ5 series, for one-person installation with nearly no layout time

Working as a pair, the Gecko Gauge clamps to each siding course acting as a second set of hands to gauge and support the next course for nailing

Adjustable at 1/4 In

increments for 4 In

to 8 In

siding reveals

Will not scratch or mar pre-painted siding

Friction-cam mechanism supports full 12 Ft

fiber cement siding lengths

Set of 2 clamps