David's D.R.O.M. Devices

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My magical portable DROs are for professional manual machinist. Most machine shops dont have those expensive digital DRO installed on there machines. The shops that do have them are usually broken. So I invented a magnetic DRO system that travels with machinist from shop to factory wherever you work. They beat any dial indicators in world. I make special made magnets for 6, 12, 20, for linear digital scales. 1. No need to contort your body to read those little lines and numbers on dial indicators.2. More precise measurement and easier to read from a distance in helping increase productivity. So enjoy your new Portable Digital Readout Measuring Devices. United States Patent Granted on June 9, 2015. US 9,052,181 B1