Light-metal mounting head with levelling ball up to 30° tilt and circular bubble, and geared centre column. Centre column length is 50 cm (39 cm adjustment range). Helical gearing on the centre column acts as an automatic column brake. Mounting plate diameter is 89 mm. With leg spread stops at 20°, 35°, 55° and 80°.. The maximum height given below is that an approx. 20° leg spread and with the centre column fully extended.