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Operation
Height adjustment
Lower stage
The elevation tube (1) forms the lower stage
of the pedestal height adjustment and has a
range of 434 mm (17.1 in.), and is pressure-
assisted to aid elevation whilst the pedestal is
loaded. To adjust the height setting:
Lower the top stage (2) and engage the safety
catch (3).
2
Support the weight of the load by
holding the steering ring and then
slacken the bottom clamp (4) by turning
the black knob counter-clockwise until
the lower stage is free to move.
2
Use the steering ring to set the column
at the required height and re-tighten
the bottom clamp (4).
16
4
4
Top stage
The top stage of the column has an on-shot stroke of 410 mm (16.1
in.) and the load can be moved over this distance, in balance, by
raising or lowering the steering ring.
A clamp (1) for the top stage is fitted to the pedestal. This can be used
to hold the top stage in position if fixed-height operation is required.
Turn the clamp lever clockwise to apply the clamp and counter-
clockwise to release it.
2
4
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