FOOTNOTES:
[7] It may be well to point out that the above details relate to the case in which the stem-wind work is on the top plate. When it is under the dial, of course the corrections here given for a deep and shallow depth will be reversed.
[8] This contains about 1 part of pure acid and 2 parts of water.
[9] Taken from M. H. Robert’s Etudes sur diverses questions d’horlogerie.
[10] If a greater or less quantity of the solution is required, all these quantities must, of course, be increased or diminished proportionately.