The Keson 48" Box beam level offers a strong aluminum profile (860 g/m strength) with 2 Shock-absorbing end caps to protect the level in case of a fall or shock. End caps are equipped with an anti-slip surface, allowing for convenient positioning and a secure grip to the measuring surface. The break-resistant acrylic block focus vial with 20% magnification also offer a luminous backing for low light conditions. The vial fluid is not affected by electricity and will not fade under sunlight. Accuracy of the level: ≤0.0005 in./In. (0.5 mm/m). 2 ergonomically designed handholds provide a comfortable grip. Made in Austria.