Description
The ROBERT BOSCH TOOL GROUP GLL50-20 is a self-leveling cross-line laser designed for interior layout, alignment, and leveling tasks across commercial and residential jobsites. It projects both a horizontal and vertical red laser line simultaneously in cross-line mode, delivering a leveling accuracy of 5/16 inches at 30 feet across a working range of up to 50 feet. Power options include standard AA batteries or an optional 3.7-volt Lithium-Ion 1.0 Ah battery that supports use while charging. The unit carries an IP 55 rating for dust and water resistance, making it suitable for demanding site conditions. Electricians, plumbers, tile setters, and general contractors are the primary installers.
The GLL50-20 is suited for interior finish work, mechanical rough-in layout, partition framing, and fixture alignment in both residential and light commercial settings. The cross-line projection allows a single technician to establish level and plumb references simultaneously without a second set of hands. Tilting the unit manually disengages the leveling mode so lines can be projected at custom angles, expanding its use for stair stringers, sloped soffits, or angled installations.
Key Features
- 50-foot working range with 5/16-inch leveling accuracy at 30 feet
- Projects simultaneous horizontal and vertical red laser lines in cross-line mode
- Smart Pendulum System self-levels and blinks to indicate out-of-level conditions
- Pendulum locks automatically when switched off for safe, secure transport
- IP 55 dust and water-resistant rating for use in demanding environments
- Full rubber overmold housing protects major impact points on all sides
- Compatible with AA batteries or optional 3.7-volt Lithium-Ion 1.0 Ah battery
Compatibility
Designed for use as a freestanding cross-line laser on standard tripods and compatible mounting surfaces. Optional 3.7-volt Lithium-Ion 1.0 Ah battery is sold separately and supports pass-through charging during operation.
Installation Notes
Installation and setup is typically performed by electricians, plumbers, or general tradespeople. Before use, ensure the mounting surface or tripod is stable and rated for the unit weight. Power down or remove batteries before transporting the unit to prevent pendulum damage. Verify the leveling indicator is steady and not blinking before recording any reference lines.
Technical Specifications
- Working Range: 50 feet
- Leveling Accuracy: 5/16 inches at 30 feet
- Laser Line Modes: Horizontal, Vertical, Cross-Line
- Battery Type: AA (included); 3.7-volt Lithium-Ion 1.0 Ah (sold separately)
- IP Rating: IP 55 (dust and water resistant)
- Weight: 9.39 pounds
- Unit of Measure: EA
Standard Information
- Brand: ROBERT BOSCH TOOL GROUP
- Manufacturer Part Number: GLL50-20
