E 12
Scales with more distinct lines have been ordered. On the same date the counting comb was removed and a new micrometer head fitted for recording the revolutions of the screw; a worm wheel on the head operating a graduated dial.
Clocks. The daily losing rate of the sidereal Standard clock (Dent 39741) varied from +0 s .60 on January 3, to -1 s .01 on several days in the summer. At the former rate the barometric pressure was 30.24, and the temperature of the clock room 60°.9. At the latter rate the barometric pressure varied from 29.39 to 29.65 and the temperature from 82° to 85°. The excess of the observed rate over the calculated rate, after cloudy periods is given below:
E 12
Scales with more distinct lines have been ordered. On the same date the counting comb was removed and a new micrometer head fitted for recording the revolutions of the screw; a worm wheel on the head operating a graduated dial.
Clocks. The daily losing rate of the sidereal Standard clock (Dent 39741) varied from +0*60 on January 3, to -101 on several days in the summer. At the former rate the barometric pressure was 30-24, and the temperature of the clock room 60°-9. At the latter rate the barometric pressure varied from 29-39 to 29.65 and the temperature from 82° to 85°. The excess of the observed
over the calculated rate, after cloudy periods is given below:-~-
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