For home use, this tool is used infrequently and can take a long time between uses. Mine was a piece of junk. It took me a while to figure it out as it only showed up every once in a while, but I ended up throwing it away because it never worked when I wanted it to and I spent all my time unscrewing the back cover to fix it to try to make it work. I still don't know exactly what happened to him, but the money was down the drain. Where's the radio store when you need it?
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π Johnson Level and Tool 400EM-S 12-Inch Heavy Duty Metal Combination Square for Professionals, with Inch/Metric Measurements, Silver - 1 Square
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Kapro - 353 Professional Ledge-It Try & Mitre Square - For Leveling And Measuring - Features Stainless Steel Blade, Retractable Ledge, And Etched Ruler Markings - 12 Inch
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