Hi there,
Searching for "detecting" "sufrace mapping" with a tool (would be great if it would be mobile).
My mission is; mapping some sensitive areas (0-5mm depth) with a 0.1mm accuracy.
For example, a tire:
Using-tire-tread-depth-gauge_73454341.jpg
Which can I use for it?
What you suggest?
Hi,
Welcome to the forum.
Please read the post at the start of any forum , entitled "How to use this Forum".
OR
https://forum.arduino.cc/index.php?topic=712198.0
Try googling
surface mapping sensor arduino time of flight
There may be a sensor of TOF type that may do the job for you.
Tom... 
Hi,
The accuracy you are looking for, you may have to delve into industrial or laboratory grade sensors.
Tom...
Laser (parallax) profilometer
this ?
Does it have to be contactless?
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