The features of the SmartTool are consistent across the 24 inch level, 48 inch level, and the Builder's Angle Finder's Module. The module is actually the same only mounted differently for each product variation. The same custom sensor is made in Oklahoma City, Oklahoma and is used in all of the M-D SmartTool products.
Features include:
Displays in degrees, percent, and inches/foot
Indestructible block acrylic vials
Patented liquid sensor made in the USA
Over 2 million sold
500 hour battery life (9 volt battery included)
Patented calibration in both level and plumb
Calibrate on any semi level surface without vials
High visibility LCD display
Display image flips when upside down
Listen and Level Audio tone at level and plumb
Hold button freezes display
1 year warranty
Measurements for inspectors, machine installation, sidewalks, saw blades, construction, surveying, welding, rafters, stairways, ramps, ADA, and more. Over a million sold.