-The Optical Plummet Twist Focus Tribrach features twist focus (2.5X mag) and leveling screws with center line -Features an 8-min vial, three-prong forced centering and a 5/8 x 11 base -This tribrach has a focusing range of 1.5 to 50 feet (0.5 to 15 m) Black -Weight: 1.85 lb (0.84 kg)