 |
1. Field Survey - Sapper |  |
2. Gordon Plotting on Long Bar Multiplex - Sapper |  |
3. Kitto on Press - Sapper | ||
 |
4. Rackham Scribing - Sapper |  |
5. Redfern on Cambridge Comparator - Sapper - Sapper | ||||
|
1. Field Survey - Sapper | |
2. Gordon Plotting on Long Bar Multiplex - Sapper | |
3. Kitto on Press - Sapper | ||
|
4. Rackham Scribing - Sapper | |
5. Redfern on Cambridge Comparator - Sapper - Sapper | ||||