Secced SC-Video-10/100VP Operator's Manual page 19

Lift the complete tripod and head out of the case and keep the floor spreader (21) attached
to the tripod.
Release the three locking clips (22), open out the legs while holding the legs. Gentle foot or hand
pressure on the spreader will ensure that the legs are fully spread.
NOTE:
Always use the spreader where possible as this increases rigidity of the tripod.
Being flexible, the spreader compensates for uneven ground. It can be removed
and a dolly fitted. At the fullest extension of the spreader and with all legs fully
retracted, the tripod can be used at its lowest operating height. Although the tripod
can be set up lower than this without the spreader, it is NOT recommended as
the tripod geometry becomes unstable.
Fig 12
Spread the legs
Operation
Release the locking clips
(22)
17