Poynting, J. H. (John Henry), 1852-1914, Shakespear, Gilbert Arden, ed, Barlow, Guy, joint ed · Cambridge, University Press · leaf 101
lane, both groove and planebeing at the back of the pillar. A screw, s, clamps the collar in any position.Gut strings running up over pulleys and supporting counterpoises, slidingon the thinner pillars (see Fig. 9), are attached to the collars s& that thesemove easily. At first springs were… … Fig. 9. Cathetometer used to measureVertical Diameters. 66 ON A DETERMINATION OF THE MEAN DENSITY OF THE BAETH AND The fine adj ustment is secured by the use of a piece of plate-glass {g, Fig. 10),placed in the front of each object-glass and capable of rotation about a
Poynting, J. H. (John Henry), 1852-1914 · Physics
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