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PacTool International SA903 2-Piece Gecko Gauge Hardi Board Siding Gauges

4.8 out of 5 stars 656 customer reviews
| 19 answered questions

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  • 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.
  • Currently this tool is Zone 10 specific
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$55.00 & FREE Shipping. Details In Stock. Ships from and sold by Amazon.com. Gift-wrap available.

Frequently Bought Together

  • PacTool International SA903 2-Piece Gecko Gauge Hardi Board Siding Gauges
  • +
  • Freud D0704DH Diablo 7-1/4-Inch-by-4-Tooth Polycrystalline Diamond Tipped TCG Hardie Fiber Cement Saw Blade with 5/8-Inch Arbor
  • +
  • Hitachi 725397 4-Inch 6 TPI Jig Saw Blades For Fiber Cement Siding - 3 Pack
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Product Description

Product Description

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 with virtually no layout.

From the Manufacturer

For siding installation, similar to SA902, but this newer model will not scratch pre-painted siding. 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.

Product Information

Technical Details

Part Number SA903
Item Weight 1.3 pounds
Product Dimensions 12 x 12 x 16 inches
California residents Click here for Proposition 65 warning
Item model number SA903
Item Package Quantity 2

Additional Information

ASIN B000VERBCU
Customer Reviews
4.8 out of 5 stars 656 customer reviews

4.8 out of 5 stars
Best Sellers Rank #3,235 in Home Improvements (See top 100)
#279 in Home Improvement > Contractor Supply
Shipping Weight 1.3 pounds (View shipping rates and policies)
Domestic Shipping This item is also available for shipping to select countries outside the U.S.
International Shipping This item can be shipped to select countries outside of the U.S. Learn More
Date First Available August 24, 2007

Warranty & Support

Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.

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Customer Questions & Answers

Customer Reviews

Top Customer Reviews

Verified Purchase
Used this to side a new house with 8 1/4" Hardiplank lap siding, with a 7" reveal. Two decades ago we made our own hangers... Glad I found theses for my first Hardi job, because they're fantastic and easily made it a two-person job (one to cut and one to hang). It is also easily a one person job for low work, but climbing up and down from scaffolding for high work will get old. There are many glowing reviews of this product, and you should believe them, so here are some tips and thoughts:

- These hangers reference the bottom of each course - definitely the most accurate way to hang siding and much better than hanger/gauge products that reference the top of each course. Hardi can vary in height so if the hanger hangs from/references the top of the board, you are immediately introducing error into the procedure. Geckos do it the smart way.

- For blind nailing, some courses will snug up very tight to the wall, certainly short pieces. This will mean that you have to grab the bottom lip of the board and pull out a bit to slip the Gecko in. For the most part, you'll be able to insert a Gecko one-handed. I have no experience using these Geckos with face nailing, only blind nailing.

- Geckos have two rails that the Hardi will rest on, you need to keep an eye on how the Hardi rests on the rails so that you know the tool is perpendicular to the Hardi plank. If the tool is positioned off-vertical, you will introduce error.

- You must watch the Gecko when setting the Hardi down into the Geckos. It is heavy enough to make the Geckos slip a bit downward and introduce error. The procedure is simple: clamp the Gecko so it is snug to the reference course. Lightly set the next course onto the Gecko rails.
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Verified Purchase
Carpenter and contractor for 30 yrs.

Got a siding job, a job I've done many times in the past but rarely do anymore. Called for Hardiplank fiber-cement siding, which I haven't used before, so I did all the research I could in an attempt to be as efficient as possible. I started the job solo a couple of days before the siding crew that was hired showed up. Got all my elevations and transferred all my course lines and went to work. I immediately found that the individual planks varied in width by around 3/16", a discrepancy that adds up very quickly and would usually make it necessary to check layout constantly. However, because these gauges clamp on rather than hang from the top of the previous course, they register from the bottom, which is the true course line. I was hitting my lines consistently, and felt the need to check layout much less often.

When the siding crew showed up they rolled their eyes at my fancy green gauges, but in less than an hour I could barely pry them out of their paws. Ended up selling to the lead guy for what I paid so he'd have them for his next job that Monday.

I'll be buying another set.

JW
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These are great if you're doing a siding job alone. They are easy to use and make the job a breeze. The only improvement I would like to see is more exposure settings. The holes are drilled so that exposures can be set on 5,6,7, or 8 inches only; nothing in between. My exposure needed to be 6.75 inches in order for the siding to align with the top of windows and doors so I had to hot glue a 1/4 inch spacer to make it work. Still, a great product; worth the money. I would buy again.
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Verified Purchase
These are awesome. If you are working by yourself (I mean, you ask your male children to help) they are a necessity. I tried to get reimbursed from my Flex Spending Account as a necessary medical item because it lowered my stress, prevented me from having a stroke, and benefited the health and well being of my 12 year old and 22 year old sons. They didn't approve it.
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Verified Purchase
I'd borrowed a friend's aluminum Gecko Gauges and loved them, so I thought these cheaper plastic Geckos would be a good substitute since I don't use them often and wouldn't need the long-lasting strength of aluminum. But these don't work nearly as well. Where the aluminum Geckos stay flush to the siding when you clamp them in place, the plastic Geckos pull away from the siding if you tighten them tightly like you can with the aluminum Geckos. Then the siding slides down and misses the slot that's supposed to hold it in place. These work better if you tighten them very lightly, staying close enough to the siding for the ledge to catch the next board, but I only used them with hardiboard siding 6 feet long or shorter. I doubt they'd stay in place with a full 12-foot length of hardiboard. If you want the solid performance of Geckos, my advice is to bite the bullet and shell out for the more expensive aluminum gauges. The difference is significant.
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Verified Purchase
figured i would give these a try and i am glad i did, they are slick. it does take some time to adjust them to the correct reveal but once you do its a breeze to use. we usually have a three man crew when working a siding job these basically made the third guy stand around. we are going to get another set so we can do two walls at once. they slide right on and lock on tight, the only issue with them is the top where the siding slips in, angles away from the wall slightly so sometimes the siding will slip down past the lip slightly but as long as you keep and eye on it and push them in alittle theres no problem. overall we are extremely happy and can honestly say they have sped up productivity.
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