60 5.24 5.87 6.49
60 .57 1.14 1.71 2.30 2.89 3.49 4.10 4.72 5.34 5.93 6.52
1/4-hour and the 5 and 10-minute divisions may be spaced with the'
eye or they may be computed.
When placing the dial in position, care must be taken to get it
perfectly level and have the style at right angles to the dial
face, with its sloping side pointing to the North Pole. An
ordinary compass, after allowing for the declination, will enable
one to set the dial, or it may be set by placing it as near north
and south as one may judge and comparing with a watch set at
standard time. The dial time and the watch time should agree after
the watch has been corrected for the equation of time from table
No. 3, and for the difference between standard and local time,
changing the position of the dial until an agreement is reached.
Sun time and standard time agree only four times a year, April 16,
June 15, Sept. 2 and Dec. 25, and on these dates the dial needs no
correction. The corrections for the various days of the month can
be taken from Table 3. The + means that the clock is faster, and
the means that the dial is faster than the sun.
Pages:
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636