M-D Building Products’ SmartTool Level resembles your ordinary bubble level about as much as a refrigerator resembles a portable beverage cooler. Their level digitally displays degrees, percent slope, and pitch — plus it can audibly report when it’s level or plumb, so you can keep your eyes on other aspects of the job.
The display readout flips over with the level, so it always reads right-side-up, and it shuts off automatically after six minutes of not being used. A hold button will freeze the measurement on the display, so you don’t have to remember it. Push-button field calibration keeps it accurate within 1/10 of a degree — you can perform the calibration on any reasonably level surface in a few minutes.
The display module separates from the level body with only a screwdriver or a coin, allowing it to function as a torpedo level. The aluminum level body sports a pair of horizontal and vertical bubble vials so you can still use it without the display.
M-D Building Products sells the SmartTool display module separately or packaged with levels in lengths of 24″, 48″, or 96″. They also sell a magnetic bracket so you can measure anything made of iron or steel hands-free .
The SmartTool display module runs about $100, and a 48″ level with the display module runs about $120. M-D thoughtfully provides a 9V battery to power the module.