This command eliminates the need to carry a separate calculator in the field. The calculator can be used to do scientific computations, standard calculations, conversions, triangle calculations including angles and curve calculations.

Standard Calculator

This calculator allows for most basic calculations to be done with this tool. Memory functions are also available.

Scientific Calculator

Values can be entered on the X register by typing on the keypad. The values can be rolled up and down with the up and down arrow keys and the Roll and RollD buttons on the screen. The Enter key finishes the entry of a number and pushes the stack. The C on the touch screen clears an entry. Additional functions on the screen can be obtained through touching the scroll [<] and [>] area of the screen.

Conversion Calculator

Conversion values can be entered for various unit types and scenarios.

• M to Ft: Conversion calculator for converting between the following units. Enter a value in any field and press enter to find the conversion value.

Feet, Meters and International Feet

Degrees, Minutes, Seconds and Gons/Grads and Decimal Degrees

• Slope Distance to Horizontal Distance: This option allows you to convert slope distances with zenith angles to horizontal distances and vertical differences, and vice versa. See this figure.

• Lat/Lon-SP: This option allows you to convert from  Latitude/Longitude to grid system coordinates and vice versa.  If you are configured for U.S. State Plane Coordinates, the routine conveniently displays your zone, and you can even change zones for quick calculations without altering your GPS zone settings in Job Settings. Otherwise, the calculation is based on your Job Settings GPS Zone.  To solve for northing and easting, fill in the latitude and longitude and press Solve N/E. To solve for latitude and longitude, fill in the northing and easting and press Solve Lat/Long. You can set the state plane zone at the bottom of this dialog.

After completing a conversion, you may enter a point ID and press Save to save the coordinates to the current job. You can also change the type of transformation or zone system used.  If you don’t want NAD 83 (primarily used in the U.S.) you can go to Job Settings, GPS and change the Transformation type.  For example, you could change the Transformation to UTM or NTF-France.  Then back in Calculator, your coordinate to Lat/Long calculation would be based on the configured transformation.  Note that when converting Grid System Coordinates to WGS84 coordinates and going WGS84 to Grid, for example, the geoid separate file (if any) is applied to the calculation.

• Az-Br: This does a straight, simple calculation converting azimuths to bearings.  A prime example, shown below, would be converting an azimuth of 119.2547.

Other Calculations

There are two types of calculations that can be done from the Other tab.  Click the large, square icons to go to the Triangle or Curve calculator.

Triangle Calculator

The next figure shows the Triangle calculator. The top of the dialog box indicates the mode of calculation. To change the mode, simply use the pull-down and pick on the desired mode.

• Side-Side-Side
• Angle-Side-Angle
• Side-Angle-Angle
• Side-Angle-Side
• Side-Side-Angle

After choosing a mode, simply apply the values to the appropriate blank and hit solve. Points from your current job can be selected to fill out the blanks as well. The points can be selected from the screen or from the point list by picking the appropriate button icon. After the calculations have been performed, there are choices of: Clear, Results, and View Triangle. Clear will clear the entry fields. Results will show the results dialog again.  View Triangle will draw the triangle on the screen connecting the points chosen for the calculation.

Curve Calculator

The next figure shows the Curve calculator. Simply use the pull-down at the upper left and pick on the desired method of curve calculation.

• Radius-Delta Angle
• Radius-Chord Length
• Radius-Arc Length
• Deg. of Crv.-Delta Angle
• Deg. of Crv.-Chord Length
• Deg. of Crv.-Arc Length
• Delta Angle-Chord Length
• Delta Angle-Arc Length
• Chord Length-Arc Length

The type of curve can be toggled between roadway and railroad. Values can be entered into the blanks by keyboard entry, by selecting points from the current job from a point list or from the screen, or by selecting an arc drawn on the screen. Once the values are entered, the results show on the screen. The results can be visualized by selecting the results button. The curve can be viewed on the screen by selecting the view curve button.