Seco Column Clamp - 4852-15

Column Clamp for Lasers and Instruments
The Seco #4852-15 is a lightweight and easy-to-use solution to freeing   up floor or ground space when setting up your 5/8 x 11instrument.  Use   the Column Clamp, instead of a tripod, to take advantage of the   excellent stability and support that columns offer your instrument.    This highly portable accessory gives you another option for stabilizing   lasers and theodolites.
It works with all instruments 
The column rotates to orientate 
The clamp is designed to fit both round and square column types
A   ratchet strap quickly tightens the 4852-15 into place to create a   strong connection to columns with diameters up to 20 inches. Get yours   from Stakemill today. (0.5 m)
The centerline of the 5/8 X 11 stud to column measures 6.5 in (16.5 cm)
“Nail holes” in the clamp body allow for attaching to wood corners
the instrument when needed and features 1 ft (30 cm) of  weight adjustmentwith a 5/8 x 11 base, ideal for lasers and theodolites
It is constructed of aluminum 
Weighs 5.10 lb (2.32 kg)