Precision crafted anodized, machined aluminum frame for superior accuracy and durability. Four vials read plumb, level, 45, and cross check. Three 90 beams emit simultaneous level, plumb and square reference points. Strong magnetic v-groove base and tripod mount allows for flexible attachment to a variety of surfaces. V-groove aligns unit with pipes. Works with any 1/4 in. 20 tripod. Removable base plate can make horizontal leveling more convenient.