Johnson's durable and accurate 48 '' digital box level is the perfect addition to your toolbox. Its backlit EZ-Read ™ display is highly visible in both the darkest and brightest workplaces, while the digital measurement readout automatically reverses for convenience when you're taking higher measurements. This level can display five units of measurement: degrees, percent, inches / feet (fractional), inches / feet (decimal), and mm / m - and is accurate to + 0.1 ° to 0 ° / 90 °. Durability is also not a concern with this tier - its rigid box frame resists deflection and twisting, shock absorbing end caps protect the tier when dropped, and the solid block vials were designed to never fog, leak, or crack.