Having changed the batteries in both mine and my wife’s Suuntos I needed a way to test them without being able to go diving and not wanting to dangle them in the canal on a bit of string (pretty sure its only about 1m deep anyway).
I looked at the proper watch testing pressure chambers, but they are at least £100 even before the import duties from China, time to see what I can do on the cheap.
Searching ebay for “clear pressure chambers” I found a clear water filter holder for £12 that was rated to 60psi which is around 4bar, so good down to about a pretend 40m then, bonus!
Amazon had a 60psi pressure gauge that would fit on the one side for about £6 and a Schrader valve that would fit on the other end.
All the bits arrived today, time to see what I can break!
So after wrapping the threads of the gauge and valve with plumbers tape to stop leaks, then filling it up most of the way with water so if it DID blow there was only a small amount of pressurized air to explode, throwing in the computers and a few pumps from the bike pump later I present the following…..
Next I need a rig to hold the computers so you can actually see them properly (maybe even the right way up)
In order to avoid an uncontrolled ascent you do need to be VERY light on the Schrader pin.