Project of an instrument for the identification of persons : for use in military establishments, police offices, &c. and for physiological and artistic research / by Joseph Bonomi.

  • Bonomi, Joseph, 1796-1878.
Date:
1872
Catalogue details

Licence: Public Domain Mark

Credit: Project of an instrument for the identification of persons : for use in military establishments, police offices, &c. and for physiological and artistic research / by Joseph Bonomi. Source: Wellcome Collection.

Provider: This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.

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    METHOD OF DIVIDING THE SCALE. height, as well as a slit in the centre, from which may be suspended a plumb-line, for the more easy detection ot any deviation from the perpendicular in the form or in the position of the person under measurement. Method of dividing the strips of deal into feet, inches, and eighths. Next in importance to the placing of the strips of deal on the wall, at the exact angle or inclination, is the accurate division of the scale into feet, inches, and eighths of an inch. The method adopted by the Author was to pro- cure a sheet of Alderman Sir Sydney Waterlow’s inch-ruled paper, divided into eighths. Strips of this paper, about one inch and a quarter in width, are cut at the proper angle for each lath. The strips are then pasted on that margin of the lath which will be lowest when the instrument is in position. On the margin on the opposite side of the groove is to be pasted a strip of cartridge paper of the same width as that of the scale, and this is to be divided into feet and quarters of a foot, by drawing a line at every three inches, using the indicator as a ruler. The scale for measuring the height will, of course, be divided by horizontal lines, while the scale for mea- suring the extent of the arms will have vertical divisions. The whole is then varnished and, when dry, fit for use. The advantage of adapting the accurately divided paper of Alderman Waterlow is, that every instru-