measuring wood plate thickness

[phage]

I have access to only one side of the plate, i.e. cannot clamp both sides of the plate to measure.
Is there any way, perhaps acoustic methods, to measure a plate thickness from only one side?

 

[Strong]

An ultrasonic thickness measurement may be possible. A sample of the wood should be tested for calibration, if possible. May have to reduce amplitude (signal power) to get good reflection from back side.

https://www.bing.com/search?q=ultra....69i57.11107j0j1&pglt=299&FORM=ANNTA1&PC=U531

Walt

 

[phage]

That is useless. It can only be used to measure the thickness of film on a hard surface.