Bosch Optical Level Kit GOL26 330 Foot Automatic Surveyor Alignment Tool (26x Power Magnification Lens IP54 Waterproof Magnetic Compensator Plumb Bob)
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Bosch GOL26 26x Automatic Optical Surveyor Level Kit
The Bosch GOL26 is a 26x-power automatic optical level kit designed to establish precise elevation baselines, verify grading, and calculate horizontal distances over operating ranges up to 330 feet. Built with a large-aperture lens, this optical surveying instrument maximizes light gathering to produce high-contrast, razor-sharp targeting imagery across long distances. An internal magnetically dampened compensator system stabilizes the line of sight against ambient ground vibrations caused by nearby heavy machinery, while an integrated transport lock mechanism protects the delicate leveling pendulum during transit.
Best Used For:
- Commercial Site Layout & Foundation Grading: Establishing flat benchmarks, checking site slope elevation, and verifying foundation footing level across long spans.
- Roadway & Drainage Infrastructure Alignment: Setting slope angles, verifying trench depth uniformity, and aligning curb lines along civil construction zones.
- Distance Estimation & Topographic Mapping: Utilizing integrated dual stadia lines and crosshairs to estimate horizontal distance and map terrain variation.
Key Performance & Safety Features
- Large Aperture 26x Lens: Gathers maximum ambient light to deliver bright, high-resolution optical target views up to 330 feet.
- Magnetically Dampened Compensator: Rapidly stabilizes internal pendulum components to neutralize site vibrations from heavy machinery.
- Automatic Mechanical Transport Lock: Clamps the sensitive internal compensator mechanism during storage and transport to preserve factory calibration.
- 90-Degree Reflective Mirror Vial: Allows quick eye-level bubble centering for rapid leveling setup on uneven terrain.
- Integrated Stadia Crosshairs: Enables single-operator leveling lines, vertical alignment checks, and optical distance measurements.
- IP54 Dust & Water Resistance: Rugged metal and composite housing withstands harsh weather conditions, dust exposure, and water splashes.
What's Included
- (1) Bosch GOL26 Automatic Optical Level
- (1) Heavy-Duty Protective Hard Carrying Case
- (1) Precision Plumb Bob
- (1) Lens Cap
- (1) Allen Key
- (1) Adjusting Pin
Technical Specifications
| Brand Manufacturer | Bosch® |
| Model Part Number OEM SKU | GOL26 (GOL 26) |
| Magnification Lens Power | 26x Power |
| Maximum Operating Working Distance | Up to 330 feet (100 m) |
| Leveling System Mechanism | Magnetically Dampened Compensator |
| Ingress Protection Weather Rating | IP 54 (Dust and Water Splash Resistant) |
| Mounting Thread Pitch Size | 5/8"-11 Imperial Thread |
| Overall Tool Length Dimension | 8.50 inches (21.6 cm) |
| Overall Tool Width Dimension | 5.00 inches (12.7 cm) |
| Overall Tool Height Dimension | 5.50 inches (14.0 cm) |
| Assembled Net Tool Weight | 3.70 lbs (1.68 kg) |
| Compatible Heavy-Duty Tripods | Bosch BT160, BT170HD, BT300HD |
| Compatible Leveling Grade Rods | Bosch Telescoping Rods GR 16, GR500 |
Pro-Tip: Always lock the compensator by placing the unit inside its hard case before moving across rough site terrain; securing the internal pendulum prevents calibration drift and protects the delicate magnetic dampening system against heavy shock loads.
