Digital Indicator Holder

I found a good way to make sure the bed is level. I printed a piece to hold a caliper. I then bolted it to the holder. It fits nicely over the printer fan. All I do is make sure the front left corner is the height I want. I raise the z axis and use the caliper to make sure all the other corners are the same. It seems to work well.

For Digital Indicator search Amazon.com for 'Clockwise Tools DIGR-0055 Electronic Digital Dial Indicator Gage Gauge Inch/Metric Conversion 0-0.5 Inch/12.7 mm with Back Lug Auto Off Featured Measuring Tool '