30
GEOGRAPHICAL, &C. INSTRUMENTS.
£ s. d.
Artificial horizons, for taking double altitudes, parallel
glasses, mercury, &c. in mahogany mounting 118 0
Ditto, brass mounting . . . . . .330
Professor Schumachers artificial horizon . .110 0
Ditto, improved by Newman, and described in the
Journal of Science and Art, for Sept. 1829 .3 3 0
Gunter’s quadrant . . . . . 4s. to 1 1 0
Azimuth compasses . . . . £5 5s. to 15 15 0
Mariners’pocket compasses . . 7s. 6d. to 2 12 6
Horizontal sun dials, for all latitudes . 3s. 6d. to 10 10 0
Ditto, mounted on a small pedestal, with or without
thermometer . . . £1 10s. to 3 3 0
Ditto, fitted in a case, with a glass cover, 7s. fid. to 0 15 0
Ferguson’s universal cross dial . . £l to 2 10 0
Spherical, vertical, or horizontal sun-dial, made for any particular situation. .....
GEOGRAPHICAL, PHILOSOPHICAL,
AND
MECHANICAL INSTRUMENTS.
Pair of magnificent globes, thirty-six inches diameter,
mounted on elegant frames .
.
.
63
0
0
Or separate the terrestial
* •
.
36
15
0
Celestial .....
.
.
26
5
0
Pair of twenty-one inch globes, in frames,
£10 10s.
to
20
0
0
Ditto, eighteen inch, ditto
. £9
to
13
13
0
Ditto, fifteen inch, ditto . . ,
£6
to
12
12
0
Ditto, twelve inch, ditto .
£4
to
7
10
0
Ditto, nine inch, ditto . . £2
12s. 6d.
to
3
13
6
Ditto, six inch, ditto ....
£2 2s.
to
2
12
6
Ditto, three inch, ditto
£1 15s.
to
2
2
0