12
When these two rings match, you have a ratio of 1:1.
So 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 “30s” equal one “60”). Notice that 35 is
over 70 and 40 is over 80. You will use these ratios
Summary of Contents for Jackie
Page 1: ...Abingdon Watches Jackie Product Information Manual and Warranty...
Page 2: ...2 Revision 1...
Page 5: ...5...
Page 35: ...35...