Mitsubishi P91DW User Manual download pdf (Page 190)

Chapter 5: Analysis Tools

5-89

5.7 The Ruler Function

Introduction

The Ruler function allows the user to create a scale based on a standard and to measure

distances from a set origin to a chosen location.

The Ruler Tools and Ruler Toolbox

Using the Ruler Function

To access the Ruler function, click on ToolBox, Analysis Tools and then on RULER.

A line with a box at each end and a circle with a cross in it will appear on the screen.

Before any measurements can be obtained, a standard scale must be established. The

scale that is created will serve as the standard for all measurements. Therefore, it is

advisable to draw the scale line according to some standard measurement within the

image (such as a ruler).

Using the mouse, click and drag one end of the line and then the other end into position.

Once the line is in position, click in the SCALE LENGTH box and type the length of the

standard. Press <enter> to save this value.

Distance is measured from the origin (designated by the circle with a cross in it) to the

mouse location. Place the origin marker appropriately, and then move the mouse. The

distance will be constantly updated in the DISTANCE box.

To hide the scale and origin, click on the HIDE ORIGIN SCALE checkbox.

Cartesian Coordinates

The Ruler function can also be used to create a Cartesian coordinate system. The origin

icon has default values (0.000, 0.000). These can be changed by clicking on the

ORIGIN box, typing in new values, and clicking <enter>.

Once the origin is placed on the screen in its desired location, the relative coordinates of

the mouse at any location are shown at the right-hand side of the screen. In the example

above, the cursor is 0.747 inches to the right of the origin and 1.071 inches below. To

hide the coordinates, click on the HIDE COORDINATES checkbox.

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Mitsubishi P91DW User Manual Page 190