No. J O 6181.
Strong bronzed metal case with jointed lid, floating Singer pattern, pearl dial, 12/6
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SURVEYING INSTRUMENTS, Etc.
No. J O 6183.
Stout bronzed Metal Case, silvered metal dial, Vernier scale, moved by rack-work motion, reading lens arranged to traverse the entire circle, altitude scale to 6,000 feet, compensated for temperature.
| 5 in. diameter ......... | ... | £7 2 6 |
| Ditto, ditto, altitude to 10,000 feet | ... | 8 0 0 |
| Ditto, ditto, altitude to 15,000 feet | ... | 8 5 0 |
| Ditto, ditto, altitude to 20,000 feet | ... | 8 15 0 |
| Kew verified. | ||
THEODOLITES.
No. J O 6184.
| 4 | in. transit Theodolite, with vertical circle, divided on silver reading to 1 minute, with parallel plates or Tribrach, best achromatic object glass, 2 Verniers, microscope to each circle, clamping and tangent screws, strong mahogany tripod stand, case for instrument, fittings complete to order ... | £ s. d. |
|---|---|---|
| 18 18 0 | ||
| 5 | in. transit Theodolite, with vertical circle as above ... | 21 10 0 |
| 5 | in. transit Theodolite, as above, with triangular plate, and tripod in place of parallel plates ... | 22 5 0 |
| 6 | in. transit Theodolite, as above, divided on silver, reading to 20 seconds, with parallel plates ... | 25 0 0 |