The product description for the Bosch GRL 400 H Professional rotary level is designed to provide precise leveling capabilities over distances up to 400 meters. It features an impressive levelling accuracy of ±0.08 millimeters per meter and can self-level within 5 degrees. This professional-grade tool operates on a rotational speed of 600 revolutions per minute using a red laser diode at 635 nanometers wavelength which emits less than one milliwatt power.
The device has a robust design with dimensions measuring 180mm in width, 190mm in depth, and 170mm in height. Its black and blue color options are available as standard choices. With its international protection rating of IP56, it offers resistance against dust ingress and limited splashing water exposure.
Operable for approximately 30 hours from a single NiMH battery charge providing stable performance throughout extended periods without needing frequent recharging. This versatile instrument includes a storage case ensuring safe transportation when not in use. Ideal for professionals requiring high precision measurements across various applications such as construction sites, engineering projects, and industrial settings where accurate leveling is crucial.
Feature summary
- Model: Bosch GRL 400 H Professional Rotary level 400 m 635 nm (< 1 mW)
- Colour: Black, Blue
- Weight: 2 kg
- Width: 180 mm
- Depth: 190 mm
- Height: 170 mm
- sku: 0 601 061 800
- Maximum range: 400 m






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