ear, 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. Still another
correction must be made which is constant for each given locality.
Standard time is the correct time for longitude 750 New York, 900
Chicago, 1050 Denver and 1200 for San Francisco. Ascertain in
degrees of longitude how far your dial is east or west of the
nearest standard meridian and divide this by 15, reducing the
answer to minutes and seconds, which will be the correction in
minutes and seconds of time. If the dial is east of the meridian
chosen, then the watch is slower; if west, it will be faster. This
correction can be added to the values in table No. 3, making each
value slower when it is east of the standard meridian and faster
when it is west.
The style or gnomon with its base can be made in cement and set on
a cement pedestal which has sufficient base placed in the ground
to make it solid.
The design of the sundial is left to the ingenuity of the maker.
--Contributed by J. E. Mitchell, Sioux City, Iowa.
Table No. 3
Corrections in minutes to change.
Sun time to local mean time,- add those marked + subtract those
Marked - from Sundial lime.
Day of month 1 10 20 30
January +3 +7 +11 +13
February +14 +14 +14
March +13 +11 +8 +5
April +4 +2 -1 -3
May -3 -4 -4 -3
June -3 +1 +1 +3
July +3 +5 +6 +6
August +6 +5 +3 +1
September +0 -3 -5 -10
October -10 -13 -15 -16
November -16 -16 -14 -11
December -11 -7 -3 +2
** Imitation Arms and Armor-Part IV [263]
The ancient arms of defense as shown in the accompanying
illustrations make good ornaments for the den if they are cut from
wood and finished in imitation of the real weapon. The designs
shown represent original arms of the sixteenth and seventeenth
centuries. As they are the genuine reproductions, each article can
be labelled with the name, adding to each piece interest and
value, says the English Mechanic, London.
Each weapon is cut from wood. The blades of the axes and the
cutting edges of the swords are dressed down and finished with
sandpaper an
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