On 2/28/21 11:20 AM, Chris Zach via cctalk wrote:
Yep, I remember having both types (screw on and wheel)
over the years, I
think the screw ons were on the pdp8. The little short corporate rack of
the pdp11V03 has a wheel.
They are nice because there is nothing more annoying than having a rack
fall over on you. Or have it fall over while you get out of the way,
then you have to roll it on its' side to get things out so you can lift
it back up. Don't ask me how I know.
There's also the "cheap and dirty" type that involves a slide-out
projection from under the rack. I have an HP storage array rack with
that feature and have used it. Works fine to keep the rack from falling
on you and is invisible when not being used.
--Chuck