Optical level Bosch GOL 20D with BT160 tripod and GR500 staff — Bosch GOL 20D set

The Bosch GOL 20D set combines the GOL 20D optical level with a BT160 tripod and GR500 levelling staff to provide a compact, tripod-mounted solution for basic levelling and horizontal sighting on construction and surveying sites. The instrument supports both automatic and manual height transfer and is designed for straightforward measurement of elevation differences, site layout, groundwork and drainage tasks where portability and ease of setup are important. The set brings together optical precision, a stable aluminium tripod and a graduated staff to enable reliable on-site readings.

Advantages

The Bosch GOL 20D optical system delivers clear crosshair sighting and accurate stadia readings for routine levelling work. The BT160 tripod provides a stable mounting platform with adjustable legs for uneven terrain while remaining lightweight for transport. The GR500 levelling staff is graduated for direct reading of height differences and is compatible with the optical stadia system of the level. Together, the components form a balanced kit that requires minimal calibration for immediate use and reduces the need for additional accessories on small to medium jobs.

Suitable for

• Measurement of elevation differences on site
• General site layout and marking
• Groundwork and foundation depth checks
• Drainage slope verification and trench levelling
• Short-term surveying tasks requiring a portable optical level

Key specifications

• Optical level type: automatic or manual levelling capability with stadia sights
• Magnification: optical magnification suitable for clear crosshair reading (level optics)
• Tripod material: lightweight, durable aluminium with adjustable leg angle and height
• Levelling staff: graduated staff designed for direct height readings compatible with stadia measurement
• Transport and setup: compact kit for tripod-mounted operation and quick assembly on site

How to use

Set up the BT160 tripod on stable ground and extend the legs to the required working height, ensuring the tripod head is roughly level. Mount the GOL 20D optical level on the tripod and secure it. Roughly centre the bubble or automatic compensator, then sight along the instrument to the GR500 levelling staff held at the measurement point. Use the crosshair to read the staff scale for elevation differences; if necessary switch between automatic and manual levelling modes following the instrument controls. Re-check tripod stability and re-level between measurements for consistent results.

Usage recommendations

For reliable readings, perform a quick calibration check before starting work, protect optical surfaces from dust and moisture, and transport the level in its protection case. Use the aluminium tripod on firm ground and extend legs fully only when required to maintain stability; avoid placing the staff and tripod on loose or shifting surfaces during measurements.