\ = /
| = |
|~~~~~~~~~~~~~~|
| - - = - -|
|- - = - |
| - - = - -|
|- - = - |
| - / \ -|
|- - | b | - |
| \ / -|
|- e//¯ ¯\\d |
| - | c | -|
|- \ _ / |
| - \ / -|
|- = - |
| - = -|
|- | | - |
| - \f/ -|
|- - v - |
| -|
/ \
¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯


The glass bulb, c, when filled with the test fluid, is closed by means
of an accurately fitting glass stopper, d, and the instrument is then
placed in a glass cylinder filled with distilled water of 17.5 deg.
temperature (Centigrade). The gravity is then at once shown on the
divided scale in the tube, a. The lower bulb, f, contains some
mercury; e is a small glass knob, which serves to maintain the