70 



L. CASELLA'S CATALOGUE 



FIG. 507- 



FIG. 502. 



498. Clinometer, 12-inch., plain boxwood, with divided semicircle, inclination scale and 



plumb, for roughly estimating the inclination of roads, drains, strata, etc. 

 The divisions on the arc show degrees and inches of elevation per yard. 

 Price, in pull off case . . . . 16 6 



499. CLINOMETER, 12-inch., boxwood, brass jointed, with divided arc and inclination 



scale, forming also a pocket rule . . . 100 



500. Clinometer, with spirit level, magnetic compass, and inclination scale, folding to 



6 inch. ...... 150 



502. CLINOMETEB, with two levels and sights, compass, inclination scale, and scale of 



fathoms in 6-inch, case. Best quality (fig. 502) . . 1 17 6 



503. CLINOMETEE, with bar needle to compass, and independent motion in the joint 



220 



504. Virian Clinometer, in mahogany case 4^-inch. square by 14-inch, thick, with 



two levels, divided arc and scales, veiy complete 



2 2 



505. CLINOMETEE, brass, 6-inch., with level, sights, arc of inclination, etc. 1 14 



506. Box Sextant, plain, in maroon case . . - .. SE *$ 310 



507. Box SEXTANT, with telescope, in case (fig. 507) ~. . 44 



508. Box SEXTANT, with telescope and supplementary arc, in case * 5 5 



509. Box Sextant, as above, with levels, in case . . . 5 15 



510. Box SEXTANT, with telescope, levels, supplementary arc, and divided circle for 



difference of hypothenuse and base . . . '" * ' 6 



512. LEATHEE SLING CASE FOE Box SEXTANT, with strap for portability 076 



513. Pcraittbulator. An instrument of great utility for measuring the distance of 



places from each other, the length of roads, etc. It consists of a large wheel of 

 known circumference, having its axis attached to a frame and handle ; a 

 system of wheels connected with the axis of the large wheel registers the 

 number of its revolutions upon a dial in English measure, or it may be 

 divided to any foreign measure if required. Plain mahogany (fig. 513), p. 71 



900 



514. PEEAMBULATOE, with metal-bound wheel, for hot climates . 12 12 



515. PEEAMBULATOE, with metallic wheel, East India Company's pattern, expressly 



for India and tropical climates .... 14 10 



