Constructing a Distance Piece (Continued)
Having a Dial with 12 main divisions and each main division is further divided into 5 subdivisions and each subdivision=1mm (Standard mm as a Chotu mm will make too small a Dial) Such that the Dial Circumference would be (on which the longest Needle P’s tip would move) = 12x5=60mm and the Diameter of the Dial would be =60¸p=19.0985 » 19.1mm i.e. C=60mm (Circum.) & D=19.1^{f} mm (Dial.) Three Dials for Needle movements.
P, R & B have been shown on the Right while on the Left we have the Diagram of the Earth with the Equator divided into 24 divisions which are in Chotu Km i.e. each Division (D_{V}) is a Basic (B) = 3600 Chkm which is represented by 1/12 Dial = 60mm/12 =5mm on the D_{F}B , One complete Dial = 60 mm on D_{F}R and = 60 Dials x 60mm = 3600mm on the D_{F}P. ( For symbols refer page 17 )
DISTANCES MOVED ON THE EQUATOR REPRESENTED BY 12

Earth’s Equatorial Circumference Distance E_{ECD}_{ }Earth’s Equator Movement ¬ Represents ®
P = R/60 = 60/60 =1 Chkm R = 60 P = 60 Chkm
R = B/60 = 3600/60 = 60 Chkm B = 60 x 60P = 3600Chkm
B = E/12 = 60 X 60P = 3600Chkm E = L/2 = 86400/2= 43200 Chkm L = 86400 Chkm 
Distance Piece Dial Circumferential Distance DP_{DCD}. Needle Movements
1/60 Dial =1/60 x 60 mm = 1mm
Needle R’s 1/60 Dial = 1/60 x 60mm = 1mm
Needle B’s 1/12 Dial = 60mm/12 = 5 mm. 1 Dial = 1x 60 mm = 60mm




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