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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. Get fast, accurate installation with less fatigue and virtually no layout.


In recent tests, the Gecko Gauge was recognized as the fastest and simplest fiber-cement siding tool of the popular brands tested.

  • Gauges and supports siding for one-person installation with virtually no layout time
  • Quickly adjusts for popular reveals
  • Friction-Cam mechanism securely supports full siding lengths
  • Non-marring — great for pre-painted siding
  • PacTool No-Nonsense Guarantee coverage
  • Now made in America!