Pactool international 2 piece gecko gauge hard. Gauges and supports siding for one-person installation. Friction-cam mechanism supports full 12' cement-board siding lengths. Adjustable at 1/4" increments for 4"-8" siding reveals. For use with 5/16" fiber-cement siding products. Heavy-gauge plastic helps avoid marring the painted surface. One person can install fiber cement siding while ensuring each course stays level. Adjusts for a 5, 6, 7 or 8-inch reveal. Sold in a set of two.

• Adjustable at 1/4" increments for 4" - 8" siding reveals
• Won't scratch or mar pre-painted siding
• Friction - Cam mechanism supports full 12' cement-board siding lengths
• For use wtih 5/16" fiber-cement siding products, including James Hardie's updated HZ5 series