Spectrophotometer Retention Device (for X-Rite Chroma4 and Chroma5 meters)

I work in the medical field, where our monitors have to be calibrated regularly. For the majority of them, we have to hold a spectrophotometer against the screen for 10-15 minutes each. As long as I've been doing this, I've been using 2 large, thick elastic bands tied together and hooked onto opposing corners of the monitor to hold this "puck". Being a new 3D printer owner, I decided to try modelling a part to do this for me without the hassle of trying to get elastic bands to stay on monitor