"MALCO PRODUCTS, INC. " SIDING TOOL
Use while working across the width of the plank assures greater accuracy of the desired exposure and guards against sagging
May also be used in combination with the Malco overlap gauge to prop up one end of the plank for one-person application
More accurate and easier to use than home-made wood "preacher" blocks
Adjustable for precise 5", 6", 7", or 8" exposures
Gauging block easily snaps in to desired exposure position without use of tools or fasteners
Easily held with one hand while steadying new plank for nailing
May be used with Overlap Gauge for 1-person application
Manufactured of tough, long-lasting, weather-resistant nylon material throughout
Carded
Customer Rating: 



Summary: The right tools!
Comment: Several people had negative things to say about these tools. If they would think about what they were saying before making a statement they would realize that the answer is right in front of them. Use the hangers to hold the plank in place. Use the guide to adjust it for the desired spacing. It works like a champ. Simply nail one end while using the height guide to get it exact and then do the other end. Remove the hanger from the first end after you set the nail and remove the second hanger BEFORE you set the nail on that end. (You can remove the first one before nailing too if you want to.)
This product works great. If you set the first line properly the entire wall should fall into place. Check it every 5 rows or so and sneak it back in if you have to. If you were careful then it should be consistent regardless of the tolerance of the planks!
Customer Rating: 



Summary: Worked Great!
Comment: I bought these to help me with a garage that I was building, for the most part, by myself. For a novice, these were a life-saver. Especially the metal overlap guage set. The red plastic face gauge is ok for short runs but I would probably want something a little more accurate for long runs. My neighbor, who is a home builder, saw me using them and came over to find out what I was using. Even though he uses three guys to install siding (two on scaffolding to install, one to cut) he was going to buy a set for those rare occasions when one of his guys didn't make it in. As a side note, when I started the siding, I used a table-saw with a fiber-cement blade to rip and a B&D 18V cordless skillsaw for crosscuts. Even with the special blade, the dust and fiber-cement particles were a MAJOR issue. I ended up using a plain old box cutter and speed square to score and snap. (Three passes front and back) Worked like a charm, even for angle cuts.
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Summary: Malco Facing Gauge
Comment: The facing and overlap gauge set I purchased was as explained and worked fairly well. The facing gauge was a little difficult to remove but it was helpful as a second hand.
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Summary: The cheapest helper I ever hired!
Comment: 1200 square feet of Hardi Plank siding (5 inch exposure) by myself. These two tools are a must have.
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Summary: This tool is a lifesaver!!
Comment: This tool is an absolute lifesaver! I was able to quickly AND accurately install (80) 12' pieces of siding with NO HELP! I HIGHLY recomend this product...