1.Two section elevator column design ,one section with worm gear and shaft to adjust up and down ,another section can be pull out to reach maximum height with quick clamp system .

2.Chains between legs to prevent legs form sliding. Closed length: 128cm

3.Opened length: 330cm (including 60cm for central column) weight: 8.5kg

HDP40B-1 Elevator tripod for auto level ,land surveying