Bosch 30m GLM 30-23 Red Laser Range Finder Measuring Tool Bosch MeasuringEasy to use, pocket sized laser measure for professionals Small size and modern interface with only two buttons for convenience and ease of use Fast and accurate measurements thanks to the high precision system and ISO 16331 1 certification Multiple measuring functions and units allow for versatile applications Product Highlights The laser measure GLM 30 23 Professional is the handy, user friendly solution for quick and accurate indoor measurements.