Wilson Wolpert WDC-300, Manual

Page: 20 / 54

(1). Press CIRCLE . Then "Probe Circle" and the number of points to be probed is
displayed on LED windows. If you press CIRCLE again, the required number will
increase with 1. (If WDC-300 is in backward annotation, the number you have
probed will be displayed.)
(2). Move the cross to the first point of circle, then press ENTER , the position of the
point will be displayed on X window and Y window, and the number of points to
be probed will decrease one.
(3). Repeat the steps to probe next point until enough points have been probed.
( If WDC-300 is in backward annotation, press FINISH after enough points have
been probed. Parameters of the circle will be calculated automatically and "a0
Circle R/D" will be displayed in message window which means that the circle is
saved as temporary feature a0, and the radius is displayed in X window,
diameter in Y window .
(4). Press MORE , "a0 Circle X/Y" is displayed in message window. This position of
the center is displayed in X window and Y window. Press MORE again,
"a0 T/-T" is displayed which means that parT is displayed in X
window and -T in Y window.
4.4 M
EASURING AN ANGLE
WDC-300 provides two methods to measure an angle: (1) to probe three points to get
an angle; (2) to probe 2 lines to get an angle.
1. To probe three points to get an angle
The first sampled point is the vertex of the angle, and then measure the second and
third point with anticlockwise direct. It is important that that the angle can't be more
than 180°. The following is the working steps:
(1). Press
ANGLE , then the light is on. Now prepare to measure an angle when
"Probe Angle" is displayed.
(2). Press POINT , then the light on ANGLE flash continuously which means that
sampling three points to get an angle. "Probe 3 Points" is displayed on the
screen.
(3). Move the cross to the vertex of the angle and press ENTER to probe the first
point. The position of this point is displayed on the X window and Y window.
"1 Pts Probed" is displayed which means that first point is probed.
(4). Repeat the step (3) to probe another two points with anticlockwise direct.
(5). Press
FINISH , and the measurement is completed. WDC-300 will calculate the
angle automatic and "a0 Angle <12" is displayed in message window.
The value of the angle is displayed in X window and the value of its
supplementary angle is displayed in Y window.
(6). Press MORE to get more message.
2. To probe 2 lines to get an angle.
Manual WDC-300 19