left: Sequence of fabrication....
The small brass screws are spaced the same distance apart as the probes of our Delmhost BD-10 moisture meter. The wires allow for accurate remote readings of the plugs deep in a wall. After soldering, the connections are thoroughly covered with an insulating coating to prevent a false reading.
Since the meter is calibrated for Douglas Fir, we're able to monitor comparative moisture levels, and gain insight as to how moisture moves through the walls.