Dial Holder for calibrating heatbed

I have made this holder for all dial indicator, without a holder on the back.

The hole is 8mm and match all dial indicator.

I tried first to place the dial on the extruder head, so I could move it around with the head.
It turns out that the weight from the dial, alone did change the readings and result.
So I ended up with a remix of another mount, that matches my indicator.

I hope that this is useful for others here.

Please add comments if I could change something in the design.
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