Laser level Bosch GLL 20-22 G — self-leveling green beam, cross-line laser

Bosch GLL 20-22 G is a compact self-leveling laser level that projects a bright green cross-line for interior layout and alignment tasks. The device generates one horizontal and one vertical green beam that intersect to form a precise cross, providing fast visual references for tiling, hanging cabinets, installing shelves and aligning fittings. Its compact housing and simple controls make it suitable for quick setup and frequent repositioning on small to medium indoor jobs.

Advantages

The green cross-line offers improved visibility compared with red lasers in typical indoor lighting, aiding faster alignment over moderate distances. Self-leveling functionality reduces setup time by automatically adjusting to small inclinations, while manual mode allows deliberate offset alignment when required. The unit's compact form factor and lightweight construction support easy transport and one-handed operation. Battery-powered operation ensures cordless use on sites without immediate mains access.

Suitable for

• Hanging picture frames, mirrors and artwork
• Installing wall and floor tiles
• Mounting cabinets, shelves and bathroom fixtures
• Aligning sockets, switches and trim
• General interior leveling and alignment tasks

Key specifications

• Laser type: green diode laser
• Projection: one horizontal and one vertical line forming a cross
• Self-leveling range: small angular deviations automatic correction
• Power source: replaceable batteries for cordless operation
• Mounting options: integrated thread or magnetic/flat base for tripod or attachment (as applicable)
• Weight and dimensions: compact, lightweight housing for portability

How to use

Place the Bosch GLL 20-22 G on a flat surface or mount it on a tripod. Power on the device and allow the self-leveling mechanism to stabilize; the unit will automatically correct small tilts and project the horizontal and vertical green lines. For deliberate angled lines, switch to manual mode and adjust the instrument position as needed. Use the intersection of the projected lines as a reference for marking, aligning or mounting objects. Turn off the laser and remove batteries during storage for long-term preservation.

Usage recommendations

Use the laser level indoors in appropriate lighting conditions to maximize visibility of the green beam; protect the device from strong sunlight which can reduce line contrast. Wear suitable eye protection if prolonged direct viewing of the laser beam is possible and follow local regulations regarding laser safety. Keep the unit on a stable surface when making precision adjustments and verify alignment with a second measurement for critical installations.