12
W
HEN THESE TWO RINGS MATCH
,
YOU HAVE A RATIO OF
1:1.
S
O NOW ROTATE THE NUMBER
30
ON THE OUTER SCALE SO
THAT IT IS IN LINE WITH THE
RED
60
ON THE MIDDLE SCALE
.
30
IS HALF OF
60
SO YOU HAVE NOW JUST CREATED A RATIO
OF
2:1 (
TWO
“30
S
”
EQUAL ONE
“60”). N
OTICE THAT
35
IS
OVER
70
AND
40
IS OVER
80.
Y
OU WILL USE THESE RATIOS
IN TIME
,
SPEED
,
AND DISTANCE CALCULATIONS
. I
SN
’
T THAT
NEAT
?...
AND WE
’
VE ONLY JUST BEGUN
.
Summary of Contents for Jackie
Page 1: ...The Abingdon Co Jackie Product Information and Manual...
Page 2: ...2 Revision 5...
Page 5: ...5...
Page 31: ...31...