On 13 Sep 2006 15:33:44 -0700, "saag" wrote:
I have a pair of the taller model Tiger jackpost. Each unit consists
of a threaded section that sits on one end of the pair of tubes which
have holes through which a pin controls their total length in
increments of several inches. This whole apparatus has a top plate and
a bottom plate of fairly thin metal - they only stay in place by
gravity. The threaded section just slides into the tube by gravity as
well. I would consider them to be temporary supports and not
super-stable at that. Any lateral movement and they fall over. They
are not a Lalley column.

For permanent install, I would get drill stem (2-7/8 diameter, 0.25"
wall drilling pipe) and weld steel plates on each end (3/8" or better
thickness). Drill holes in each plate and lag to the beam and floor.

Has anyone ever used this brand?
They sell a model that extends from 19 inches to 3ft.

These posts seem to work by inserting a smaller tube into a larger one
then bolting them together. Then turning a screw to fine adjust the
height. The screw must adjust it only to a certain level before you'd
have to bolt the smaller tube higher. I've read some info that says
these posts aren't meant to be used permanently.