Measuring functions

You will find the following functions in the Functions menu:

  • Length measurement
  • Continuous measurement
  • Area measurement
  • Volume measurement
  • Indirect height measurement
  • Double indirect height measurement (GLM 50-23 G)
  • Indirect length measurement (GLM 50-23 G)
  • Grade measurement/digital spirit level (GLM 50-23 G)
  • Memory function
  1. Press the  button to open the Functions menu.
  2. Use button  or button  to select the required measuring function.
  3. To confirm the selection, press the  button or the button.

The help function integrated into the measuring tool offers animations for all measuring functions/measuring processes.

  1. Open the Functions menu.
  2. Select the required function with the  button or with the  button and press the  button.
  3. The animation showing the detailed procedure for the selected measuring function is displayed.
  4. Press the  button or the  button to display the next or the previous step.

  1. Press the  button to open the Functions menu.
  2. Select the length measurement and confirm the selection with the  button.
  3. Briefly press the  button to switch on the laser.
  4. Press the  button to start the measurement.
  5. The measured value is displayed in the result line (d) at the bottom of the display.
  6. Repeat the above-mentioned steps for each subsequent measurement.

If several length measurements are taken in a row, the results of the last measurements are displayed in the measured value lines (c). The last measured value is at the bottom of the display, the penultimate measured value is above it, and so on.

During continuous measurement, the measured value is continually updated. You can, for example, move a required distance away from a wall while reading off the current distance at all times.

Three functions are available for continuous measurement, for each of which the measurement is depicted differently in the display:

Min/max

The smallest and the largest measured value are permanently shown on the display.

  1. Press the  button to open the Functions menu.
  2. Select min/max in the continuous measurement  menu item and confirm the selection with the  button.
  3. Briefly press the  button to switch on the laser.
  4. Move the measuring tool until the required distance is displayed in the result line.
  5. You can interrupt the continuous measurement by briefly pressing the  button.
  6. Press the  button again to continue the continuous measurement.

The current measured value is displayed in the result line (d), and the maximum and the minimum measured value in the measured value lines (c).

Large figures

The measured value is displayed in large figures for better readability.

Tape measure

The distance is visually displayed, as with a tape measure.

In the tape measure function, the reference level is the marking shown in the display. The reference level is not the edge of the measuring tool.

Continuous measurement switches off automatically after 4 min.

  1. Press the  button to open the Functions menu.
  2. Select area measurement and confirm the selection with the  button.
  3. Briefly press the  button to switch on the laser.
  4. Press the  button to start the first measurement, e.g. the length of a room.
  5. Press the  button to start the second measurement, e.g. the width of a room.

After the second measurement has been completed, the area will be automatically calculated and displayed. The result is displayed in the result line (d). The individual measured values are in the measured value lines (c).

  1. Press the  button to open the Functions menu.
  2. Select volume measurement and confirm the selection with the  button.
  3. Briefly press the  button to switch on the laser.
  4. Press the  button to start the first measurement, e.g. the length of a room.
  5. Press the  button to start the second measurement, e.g. the width of a room.
  6. Press the  button to start the third measurement, e.g. the height of a room.

After the third measurement has been completed, the volume will be automatically calculated and displayed. The result is displayed in the result line (d). The individual measured values are in the measured value lines (c).

The indirect height measurement is used to measure distances that cannot be measured directly because an obstacle would obstruct the laser beam or no target surface is available as a reflector.

Indirect height measurement is always less accurate than direct height measurement. For application-related reasons, measuring errors can be greater than with direct distance measurement. To improve measuring accuracy, the use of a tripod (accessory) is recommended.

When using a tripod, observe the set reference level. see Selecting the Reference Level

The laser beam remains switched on between the individual measurements.

With indirect height measurement, you can determine distance AB by measuring distances 1 and 2. The measuring tool calculates the required height AB from distances 1 and 2.

Correct results are achieved only when the right angles required for the respective measurement are exactly adhered to (Pythagorean Theorem). Ensure that there is a right angle between the sought-after distance AB and the horizontal distance 1.

  1. Press the  button to open the Functions menu.
  2. Select indirect height measurement and confirm the selection with the  button.
  3. Briefly press the  button to switch on the laser.
  4. Place the measuring tool at the height of the lower measuring point B.
  5. Press the  button to start the first measurement.
  6. Tilt the measuring tool so that the laser is pointed at the upper measuring point A.
  7. Press the  button to start the second measurement.

After the measurement has been completed, the height will be automatically calculated and displayed in the result line (d). The measured values for distances 1 and 2 are in the measured value lines (c).

Indirect distance measurement is used to measure distances that cannot be measured directly because an obstacle would obstruct the laser beam or no target surface is available as a reflector. This measuring procedure can only be used in a vertical direction. Any deviation in a horizontal direction leads to measuring errors.

Indirect distance measurement is always less accurate than direct distance measurement. For application-related reasons, measuring errors can be greater than with direct distance measurement. To improve measuring accuracy, the use of a tripod (accessory) is recommended.

When using a tripod, observe the set reference level. see Selecting the Reference Level

The laser beam remains switched on between the individual measurements.

For indirect distance measurement, 3 measuring functions are available, with which different sections can be respectively determined:

  • Indirect height measurement
  • Double indirect height measurement
  • Indirect length measurement

Indirect Height Measurement

With indirect height measurement, you can determine distance AB by measuring distance 1. The measuring tool calculates the required height AB from angle  and distance 1.

Correct results are achieved only when the right angle required for the respective measurement is exactly adhered to.

  1. Press the  button to open the Functions menu.
  2. Select indirect distance measurement  and confirm the selection with the  button.
  3. Select indirect height measurement and confirm the selection with the  button.
  4. Briefly press the  button to switch on the laser.
  5. Place the measuring tool at the height of the lower measuring point B.
  6. Tilt the measuring tool so that the laser is pointed at the upper measuring point A.
  7. Press the  button to start the measurement.

After the measurement has been completed, the height will be automatically calculated and displayed in the result line (d). The measured values for section 1 and angle  are in the measured value lines (c).

Double Indirect Height Measurement

With double indirect height measurement, you can determine distance AB by measuring distances 1 and 2. The measuring tool calculates the required height AB from angle  and distances 1 and 2.

The use of a tripod is recommended for this measurement.

  1. Press the  button to open the Functions menu.
  2. Select indirect distance measurement and confirm the selection with the  button.
  3. Select double indirect height measurement and confirm the selection with the  button.
  4. Briefly press the  button to switch on the laser.
  5. Tilt the measuring tool so that the laser is pointed at the upper measuring point A.
  6. Press the  button to start the first measurement.
  7. Tilt the measuring tool so that the laser is pointed at the lower measuring point B. Do not change the position of the measuring tool when doing so.
  8. Press the  button to start the second measurement.

After the measurement has been completed, the height will be automatically calculated and displayed in the result line (d). The measured values for section 1, section 2 and angle  are in the measured value lines (c).

Indirect Length Measurement

  1. Press the  button to open the Functions menu.
  2. Select indirect distance measurement and confirm the selection with the  button.
  3. Select indirect length measurement and confirm the selection with the  button.
  4. Put the measuring tool on the starting point A of the required distance AB.
  5. Tilt the measuring tool so that the laser is aligned with the level of end point B.
  6. Press the  button to start the measurement.

With indirect length measurement, you can determine distance AB by measuring distance 1. The measuring tool calculates the required length AB from angle  and distance 1.

After the measurement has been completed, the length will be automatically calculated and displayed in the result line (d). The measured values for section 1 and angle  are in the measured value lines (c).

The digital spirit level is used to check the horizontal or vertical alignment of an object (e.g. washing machine, refrigerator, etc.). Grade measurement is used to measure a slope or incline (e.g. of stairs, railings, when fitting furniture, laying pipes, etc.). The measuring tool automatically switches between the two functions when you change the position of the measuring tool.

  1. Press the  button to open the Functions menu.
  2. Select grade measurement/digital spirit level  and confirm the selection with the  button.

The bottom of the measuring tool is used as the reference level for the digital spirit level.

  1. To use the digital spirit level, place the measuring tool with the rear side on the surface to be measured.
  2. You can freeze the measured value by pressing the  button.
  3. When the inclination exceeds 3°, the ball in the display lights up red.

The left-hand side of the measuring tool serves as the reference level for grade measurement. If the display flashes during measurement, the measuring tool has been tipped too heavily to the side.

  1. To use the grade measurement, place the measuring tool with one side on the object to be measured.
  2. You can freeze the measured value by pressing the  button.