Hi Chris.
Nice find on the hydrometer in the wooden case. The Canadian version I have only ever seen drawings of so it is difficult to determine the size of it. The ID for is shows up in references as ZB/CAN 0641
The other version, which I am guessing now is probably the British one, I have only ever seen packed in a cardboard tube as shown. The ID for it is ZB 11065.
Been tempted to pick one up from time to time for my Mk III Cdn, which is a Truck and Ground Installation unit.
David
|