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Operation Manual
Automatic Calculation
Some items in the measurement menu are automatically calculated based on measurements of other items.
■
HC
This is automatically calculated using the following formula, provided there are measured BPD and OFD
values.
Exception: when you use Merz reference,
■
AC
This is automatically calculated using the following formula, provided there are measured APD and TAD
values.
Exception: when you use Merz reference,
■
FTA
This is automatically calculated using the following formula, provided there are measured APD and TAD
values.
■
ThC
This is automatically calculated using the following formula, provided there are measured APTD and TTD
values.
NOTE: For reference, the Osaka University /Tokyo University methods are mainly used in Asia, the
Merz method in Europe, and the Shepard/ Hadlock methods on the American continent.
NOTE: When a GS item is measured more than once, the average value will automatically be
displayed on the monitor screen.
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