| NAME | MATCH NR. |
DESCRIPTION |
| Harling 1526 Time Speed and Distance Rule | 1368 | Nautical slide rule of aluminium, 310x131x8.5 mm Front Scales: 1) = 2) 3) = 4) 5) = 6) = 7) |
| Harling 700 | 1367 | Generic slide rule of wood/celluloid, 546x44x13 mm (1890-1938) Front Scales: 20inch / A = B C = D 20inch ] 50cm Back Scales: = S T = |
| Harling Students Slide Rule | 3022 | Generic slide rule of wood/plastic, 280x33x10 mm Front Scales: 26cm / A = B C = D \ 11inch |
| Harling Wooden slide rule | 3417 | Generic slide rule of all wood, 266x25x8 mm Front Scales: 1) [ A = B C = D ] 2) Back Scales: 3) = S T = 4) |