Up and down movement of a monitor

[Anil2207]

I want to know the various mechanisms for up and down movement of a monitor inside the slot of a table. This is used in the training or conference rooms wherein when the monitor has to go down when not in use inside the slot to the bottom of the table and come up by pushing or actuating with any mechanism for the usage.

No powered mechanisms.

 

[Thyphon]

I think, it can be made easily by servomechanism.

 

[Anil2207]

but no powered movement. Has to be purely mechanical and simple