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3. The “ Lord Bury ” Hand Telescope.

Especially suitable for sportsmen and military men. Three draw tubes and bronzed brass mounts. Length when fully extended 79 cm., and when closed 27 cm. Object-glass, 4 cm. diameter, protected by a sliding shade and metal cap. Adjustable eyepiece, by means of which the magnifying power can be varied from 25 to 35 diameters. The advantage of this adjustment is that the power can be so regulated that the telescope will perform to the best advantage in the atmosphere prevailing at the time. A leather case with shoulder strap is provided with the telescope.

4. Marine Telescopes.

Of wide angular field. One draw tube for focussing ; the object-glass is protected from sun or rain by a metal shade. Nickel-plated mounts. Metal body covered with leather.

5. Transit Theodolite. (Fig. 2.)

Horizontal and vertical circles 15 cm. in diameter and divided on solid silver. Opposite verniers to both circles reading to 20 seconds. The horizontal circle is completely covered and protected by a top plate with the exception of the sections opposite the verniers. Slow motions with tangent screws and clamps are fitted to vertical and horizontal circles, and a third slow motion with tangent screw and clamp is attached to the pedestal. The tangent screws of slow motions work against reaction springs. The telescope reverses in its standards and transits. A trough compass is fitted to the under side of horizontal limb and is detachable. The principal spirit level is attached to the vernier arm of the vertical circle, and two spirit levels at right angles are attached to the horizontal limb. Levelling head with three screws and locking plate. Centering head to tripod, which is fitted with adjustable legs.



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