25
24
1.1 Mode of operation
Always place the distance covered opposite the reference mark serving as the
basis for the calculation:
●
on
SECONDS
if the interval is measured in seconds;
●
on
MINUTES
if the interval is measured in minutes;
●
on
HOURS
if the interval is measured in hours.
N.B. The time measured using the chronograph must be converted if necessary
into seconds, minutes or hours to correspond to one of the three reference marks
on the fixed scale. For example: 1 minute 20 seconds = 80 seconds; 1 hour 10 mi-
nutes = 70 minutes, etc.
2
1
b
a
3
(a) Fixed scale
(b) Mobile scale (disc)
SPECIAL CHARACTERISTICS
USING THE TACHOMETER
The variable tachometer enables one to determine an average speed whatever
the distance covered, the time elapsed or the speed reached. It is however an
approximate measurement device.
The variable tachometer is composed of a fixed scale (a) and a mobile scale or
disc (b). The fixed scale is read off clockwise, and the mobile disc in the opposite
direction. The graduations between two numbers represent tenths of units. To
read off a result, the decimal point must be placed correctly. For example, the
figure 3.2 may represent 0.32, 3.2, 32, 320, etc. The fixed scale comprises three
reference marks:
●
SECONDS (1) on the figure 3.6 (one hour equals 3,600 seconds);
●
MINUTES (2) on the figure 6 (one hour equals 60 minutes);
●
HOURS (3) on the figure 1 (one hour is the base unit for all calculations).
AVG
SPEED
Summary of Contents for BENTLEY GT II
Page 1: ...BENTLEY GT II ...
Page 2: ...BENTLEY GT II ...
Page 61: ...117 116 116 a b ...
Page 62: ...119 118 ...
Page 63: ...121 120 AVG SPEED 2 1 b a 3 ...
Page 64: ...123 122 122 ...
Page 65: ...125 124 ...
Page 66: ...127 126 S N ...
Page 67: ...128 129 129 쩸 쩹 쩻 쩺 ...
Page 68: ...131 130 131 ...
Page 69: ...133 132 a b ...
Page 70: ...135 134 ...
Page 71: ...137 136 2 1 b a 3 AVG SPEED ...
Page 72: ...139 138 ...
Page 73: ...141 140 ...
Page 74: ...142 S N 143 ...
Page 75: ...144 145 쩸 쩹 쩻 쩺 ...
Page 76: ...147 146 P ...
Page 77: ...149 148 a b ...
Page 78: ...151 150 ...
Page 79: ...153 152 AVG SPEED 2 1 b a 3 ...
Page 80: ...155 154 ...
Page 81: ...157 156 157 S N ...
Page 82: ...159 158 쩸 쩹 쩻 쩺 ...
Page 83: ...161 160 P P ...
Page 84: ...162 ...
