Lockyer, Norman, Sir, 1836-1920, Seabroke, G. M. (George Mitchell), 1848-1918 · London, Macmillan and co. · leaf 361
ingtheir declination axis over six or seven feet from theground, the walls of the Observatory can be fixed, as thetelescope, when horizontal, points over the top. The roof,which may be made of sheet-iron or of wood well bracedtogether to prevent it altering in shape, is built up on astrong ring… … Fm. 151.-Dome. Fig. 152.—Drum. groove resting on them. A small roof, if carefully made,may be pulled round by a rope attached to any part of )li,ima.flfl.
Astronomy · Telescopes
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