Field or button  Number  Function 

Main calculation pane  1  Contains the buttons and fields to perform addition, subtraction, multiplication and division of units of time. 
Upper row of entry fields  2  Specifies the first period of time in the calculation. 
Lower row of entry fields  3  Specifies the second period of time in the calculation. Note: If you click the Multiply or
Divide buttons, the lower row of entry fields
are replaced by the Constant
field.

Equals button  4  Performs the calculation. 
Result fields  5  Display the result of the calculation. 
Operation buttons  6  Specifies if the calculation is addition (+), subtraction (), multiplication (x) or division (/). 
Clear button  n/a  Deletes all values from the pane. 
Pass Value button  n/a  Moves the value in the result fields to the upper row of entry fields. 
Fraction Converter pane  7  Contains the buttons and fields to convert fractions into periods of time. 
Fraction Converter field  n/a  Specifies the fraction to be converted into a period of
time. Note: You specify if the fraction is in hours or
minutes by selecting either Hrs or
Min below this field.

Convert button  n/a  In the Fraction Converter pane, converts a fraction into a period of time. In the Fraction Creator pane, converts a period of time into a fraction. 
Fraction Creator pane  8  Contains the buttons and fields to convert periods of time into fractions. 
Fraction Creator result field  9  Displays the period of time as a fraction of hours, minutes
or seconds. Note: You specify if the fraction is in hours,
minutes or seconds by selecting either Hrs,
Min or Sec below this
field.
