Yesterday, he who shall not be named, failed to empty his work pants pockets before tossing them in the washing machine. Fortunately, the phone and electronic measuring tape didn't make it to the dryer.
Nothing to lose, so I removed as many screws as I could, pried them partially open, and used litte screws to keep an opening.
Placed them in the dehydrator at 125° for two hours. They were getting too hot when I remembered to check but the condensation in the screen windows had cleared up. I reduced the temp to minimum and left them in for another four hours. New batteries this morning and both are working. Didn't expect that.