Prev | Current Page 336 | Next

Anonymous

"Watch and Clock Escapements A Complete Study in Theory and Practice of the Lever, Cylinder and Chronometer Escapements, Together with a Brief Account of the Origin and Evolution of the Escapement in Horology"


The chapters on Ophthalmometry, Ophthalmoscopy, Accommodation,
Astigmatism, Aberration and Entoptic Phenomena, etc.--in fact, the
entire book contains so much that is new, practical and necessary that
no refractionist can afford to be without it.
Bound in Cloth. 380 Pages, 212 Illustrations.
Price, $3.50 (14s. 7d.)
PUBLISHED BY THE KEYSTONE,
THE ORGAN OF THE JEWELRY AND OPTICAL TRADES,
19TH & BROWN STS., PHILADELPHIA, U.S.A.
* * * * *
OPHTHALMIC LENSES
Dioptric Formulae for Combined Cylindrical Lenses, The Prism-Dioptry and
Other Original Papers
BY CHARLES F. PRENTICE, M.E.
A new and revised edition of all the original papers of this noted
author, combined in one volume. In this revised form, with the addition
of recent research, these standard papers are of increased value.
Combined for the first time in one volume, they are the greatest
compilation on the subject of lenses extant.
This book of over 200 pages contains the following papers:
Ophthalmic Lenses.


Pages:
324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348