--- product_id: 275011992 title: "PacTool Pacific International International SA903 2-Piece Gecko Gauge Hardi Board Siding Gauges" brand: "pactool" price: "$206.63" currency: USD in_stock: true reviews_count: 5 category: "Pac Tool" url: https://www.desertcart.us/products/275011992-pactool-pacific-international-international-sa903-2-piece-gecko-gauge-hardi store_origin: US region: United States of America --- # Adjustable 1/4" increments (4-8") Patented friction-cam hold (12' siding) One-person installation ease PacTool Pacific International International SA903 2-Piece Gecko Gauge Hardi Board Siding Gauges **Brand:** pactool **Price:** $206.63 **Availability:** ✅ In Stock ## Summary > 🦎 Nail it solo with the Gecko Gauge – precision, speed, and scratch-free siding every time! ## Quick Answers - **What is this?** PacTool Pacific International International SA903 2-Piece Gecko Gauge Hardi Board Siding Gauges by pactool - **How much does it cost?** $206.63 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/275011992-pactool-pacific-international-international-sa903-2-piece-gecko-gauge-hardi) ## Best For - pactool enthusiasts ## Why This Product - Trusted pactool brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Durable & Lightweight:** Heavy-duty polycarbonate with rubber padding ensures longevity and easy handling on any job site. - • **Secure, Scratch-Free Grip:** Patented friction-cam mechanism holds full 12-foot boards firmly without marring pre-painted surfaces. - • **Optimized for Fiber Cement:** Specifically designed for 5/16” fiber-cement siding, including James Hardie’s latest HZ5 series. - • **Precision Adjustable Gauge:** Fine-tune siding reveals in 1/4-inch increments from 4 to 8 inches for flawless alignment. - • **Effortless Solo Installation:** Supports fiber cement siding for one-person use, slashing labor time and boosting productivity. ## Overview The PacTool SA903 Gecko Gauge is a 2-piece fiber cement siding tool engineered for solo installers. Featuring an adjustable gauge with 1/4-inch increments for 4-8 inch reveals, a patented friction-cam mechanism that securely holds up to 12-foot siding boards, and a non-marring heavy-duty plastic design, it streamlines siding installation with precision and durability. Ideal for 5/16” fiber cement siding, including James Hardie’s HZ5 series, it’s a must-have for professionals seeking efficiency and flawless results. ## Description Our PacTool SA903 Gecko Gauge Fiber Cement Siding Tool can help to make your next commercial siding project easier and more productive. With our efficient clamping tool that supports and gauges cement-board siding application by acting as a second pair of hands, this design allows your siding to be level and adequately spaced while working your way up the wall, essentially eliminating the need for any layout. It is adjustable at 1/4-inch increments for 4 to 8-inch siding reveals. Our gauge has a patented non-marring friction cam mechanism that securely holds a 12-foot piece of fiber cement siding for hands-free nailing. It is constructed from heavy-duty plastic and includes a rubber padding material on the locking grip, ensuring that it won’t scratch or mar pre-painted siding. At PacTool, we are known for our outstanding line of exterior products in the construction, renovation, and remodeling sector and take pride in providing exceptional solutions that help to reduce fatigue and frustration for craftspeople, artisans, and DIYers. Review: Works fantastic! Great find and a time saver Review: Indispensable pour bien poser son bardage. Fiable et facile d'utilisation ## Features - ONE-PERSON INSTALLATION – working as a pair, the gecko gauge fiber cement siding tool supports fiber cement-board siding for one-person installation with virtually no layout time - USE WITH FIBER-CEMENT SIDING – use the SA903 gecko gauge siding tool with 5/16” fiber-cement siding, including James Hardie’s updated HZ5 series with new “eased” drip-edge profile - ADJUSTABLE – gauge is adjustable at 1/4” increments for 4”-8” siding reveals - PATENTED FRICTION-CAM MECHANISM - supports full 12’ fiber cement-board siding lengths - WON’T SCRATCH OR MAR – heavy gauge plastic won’t scratch or mar pre-painted siding ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B000VERBCU | | ASIN | B000VERBCU | | Batteries Included? | No | | Batteries Required? | No | | Color | Green | | Customer Reviews | 4.7 4.7 out of 5 stars (5,860) | | Customer reviews | 4.7 4.7 out of 5 stars (5,860) | | Date First Available | 15 August 2012 | | Date First Available | 15 August 2012 | | Included components | Gecko Gauges | | Is Discontinued By Manufacturer | No | | Item Package Quantity | 2 | | Item Weight | 590 g | | Item model number | SA903 | | Item model number | SA903 | | Manufacturer | General Tools & Instruments | | Manufacturer | General Tools & Instruments | | Material | Plastic Polycarbonate (PC) Rubber | | Measurement Accuracy | 1 | | Part number | SA903 | | Pattern | Mounting Kit | | Power source type | Hand Powered | | Product Dimensions | 30.48 x 30.48 x 40.64 cm; 589.67 g | | Product Dimensions | 30.48 x 30.48 x 40.64 cm; 589.67 g | | Size | 1-Pack | | Style | Gauge for 5/16\" fiber cement siding | ## Product Details - **Brand:** PacTool - **Item dimensions L x W x H:** 30.5 x 30.5 x 40.6 centimeters - **Item weight:** 590 g - **Material:** Plastic Polycarbonate (PC) Rubber ## Images ![PacTool Pacific International International SA903 2-Piece Gecko Gauge Hardi Board Siding Gauges - Image 1](https://m.media-amazon.com/images/I/71zwAq4uQVL.jpg) ## Questions & Answers **Q: Does this work on 12 inch siding** A: No, neither the SA902 nor SA903 work on 12" siding. There is a model SA902.12 that is made specifically for use on the 12". It is basically the model SA902 with a pair of long aluminum extensions included in the package. Since this model is made of aluminum it isn't recommended for use on the pre-finished siding as the aluminum tends to leave marks. **Q: What makes this zone 10 specific?** A: http://www.jameshardie.com/dealer/hardiezone.shtml + http://www.jameshardie.com/homeowner/hardiezone-video.htmlThe Zone 1 - 5 product has a specific drip edge design and since this tool clamps at that edge, you use it on zone 6 - 10 products. **Q: Would these work installing the big 0.312-in x 48-in x 96-in hardiepanel vertical fiber cement siding panels?** A: These are for panel siding … clamps to Z Flashing to hold up the panel. https://www.amazon.com/dp/B001PBJ6QM?tag=price125420e-20&ascsubtag=wtbs_60358245085322c828fd7606 **Q: Will this work with 1in by 8in cedar bevel ?** A: Probably not. It’s only for 5/16 siding ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by B***S on 12 December 2025* Works fantastic! Great find and a time saver ### ⭐⭐⭐⭐⭐ Review *by N***E on 20 June 2025* Indispensable pour bien poser son bardage. Fiable et facile d'utilisation ### ⭐⭐⭐⭐⭐ Review *by L***E on 13 October 2025* Geniale Montagehilfe für Hardie oder Cedral Fassaden Paneele und macht die ein Mann Montage möglich ## Frequently Bought Together - PacTool Gecko Gauge, The Original Home Siding Installation Kit - For Use with 5/16 Inch Fiber Cement Siding and James Hardie Siding, Includes 2 Gecko Gauge Clamps - Diablo HardieBlade Saw Blade for Fiber Cement - 7-1/4" x 4-Teeth, PCD Tipped - D0704DH - PacTool SS724 Snapper Shear Pro - Cutting Tool for Fiber Cement Board - Power Shears Professional Power Tools --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/275011992-pactool-pacific-international-international-sa903-2-piece-gecko-gauge-hardi](https://www.desertcart.us/products/275011992-pactool-pacific-international-international-sa903-2-piece-gecko-gauge-hardi) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-07-09*