the banister
What goes up and down but doesn't move?ANSWER: Stairs
elevator/escelator
A rug
The railing
The temperature It could also be a piano scale or a staircase.
the answer to this riddle is carpet
a lift goes vertical. an escalator is moving stairs.
A stair climbing hand truck is a dolly device that is made to go up and downstairs with ease. If you are moving in or out of an apartment (or home) with stairs, this will make moving easier.
Rug Stair Treads are mats that are laid on the stairs to get the most traction when walking up and down a stair case. They are usually put in place to help with the difficultly of walking down wooden stair cases.
Your Jaw.
Soul maybe .Like you die and the soul goes up. Or the Climber plant it do not move but grows.
The practical purpose of stair railings is to ensure that people can walk up and down stairs safely. Stair railings ensure that a person cannot fall off the side of a set of steps and also aids their balance when travelling up and down.