George......yes I see the STDB side view now.........with the hand wheel & vertical down shaft
I think it would it would be fair to assume that this STDB wheel would have had an identical drive hand held peg to the elevation wheel
The down shaft would have employed a similar set of 90 degree bevel gearbox/s & meshed up with quadrent rack ring of the train gearing
I also see the train stops in the pedestal just above deck level....from the positioning it appears that the mounting had 180 degrees of train....MINUS the physical length of the center stop block
The fixed stop block would have contained a spring buffer on either side......the moving stop blocks were an earlier method of achieving pointing & non pointing zones [which prevented a silly sailor from firing at the vessel bridge
![laughing {-)](https://www.modelboatmayhem.co.uk/forum/Smileys/Tug/grin.gif)
] ......Derek