I wanted to be be able to have a small monitor on my rowing machine instead of the a phone or tablet. I designed it to fit my water rower with the table arm. It mounts on the end of the arm.
https://www.waterrower.com/us/products/waterrower-performance-ergometer-rowing-machine
This mount is very much a work in progress but is good enough to mount a small 21in monitor to. The area that needs work is the interface to the tablet arm. It is secure but has a lot of room for improvement. I am not aware of what the weight capacity of the tablet arm is but the monitor is likely at the extreme if not past. Please use at your own risk. That being said I have had it on there for a few months and have had no issues at all.
PTEG, 6 walls, 60% infill
The author marked this model as their own original creation.