Operating Guide

two right triangles “C1” and “C2”. Once these two values are known, the LDM can

solve two Pythagorean equations for the missing values of the other two legs

(“A1” and “A2”). The final calculation, which solves for A—the height of the

building—is A = A1 + A2.

Fig. 9. Triangulating a height using three inputs

• Auto height measurement. Using a slightly

different technique (see Fig. 10), the LDM can

quickly calculate the height of any object using

only two inputs.

Fig. 10. Automatic calculation of a height using

two inputs

To measure the height of an object using triangulation

with two inputs:

1. First make sure that the line of sight from the LDM to the bottom of the object

forms a right angle.

2. Use the button to choose the top of the LDM as the measurement

reference. Also make sure the laser is on.

3. Press the button three times. A icon will appear on the left side of the

display with the hypotenuse flashing.

4. Aim the laser at the top of the object and press the button. The distance

measured (the hypotenuse) will appear on the second line of the display and the

horizontal leg of the on-screen triangle will begin flashing.

Without moving the LDM

, and keeping it as horizontal as possible, aim the laser

at the bottom of the object and press the button. The distance measured

will appear on the third line of the display and the height of the object will appear

on the bottom (summary) line. The final display will look similar to Fig. 11 at the

top of the next page.

MEASURE

B1/B2

A=A1+A2