The Ermenrich Reel GM100 is a laser measuring instrument designed for measurements on construction and renovation sites. It can also be used for land boundary surveys, surveying work and other applications where accurate measurement of the linear size, area and volume of an object is required. The maximum measurable distance is 100 meters. The laser meter can also be used as a laser protractor. Thanks to the Pythagorean theorem function, it automatically calculates the distances after intermediate measurements. This function is especially useful when the laser cannot be positioned directly by extending it between the two points.

The Ermenrich Reel GM100 laser meter has a large LCD display. The device is easy to use even in difficult working environments thanks to its compact plastic body and easily accessible control buttons. The device works with 2 AAA batteries and has an automatic shut-off function that turns off the laser or the laser meter itself in order to save the battery. On average, more than 5,000 measurements can be performed without changing batteries. Depending on the selected mode, the device performs one-time distance measurement or continuous measurement in the room. If disturbed, the beeps can be turned off.

- Several types of measurement: distance, angle, area and volume
- Single distance measurement mode or continuous (scanning) measurement mode and 100 groups of results
- Automatic distance calculation after intermediate measurements (Pythagoras theorem function)
- Easily accessible operating buttons, 4-line LCD display
- At least 5,000 measurements without battery replacement