I liked Hesed's Multimeter Mount, but it was a little too large for my slightly smaller DT132A multimeter, so I had to remix it to reduce the size.
It's a simple print requiring no supports and fixes to the wall using two small 3mm screws. The fixing centres for this version is 29mm. The multimeter can be used while it is mounted in the bracket, or easily removed for use elsewhere.
The author remixed this model.
Reduced width and depth to suit the slightly small DT132A meter.