This laser calibrator is made of high-grade aluminum alloy, offering lightweight construction, high strength, and corrosion resistance. It features a highly accurate, adjustment-free design that utilizes laser light for precise calibration. The laser beam is bright, clear, and suitable for long-distance applications. A straight-tube design enables convenient and accurate alignment. The battery compartment features a simple, practical tail cap that unscrews for easy access. Features: - Constructed from high-grade aluminum alloy - Lightweight, durable, and corrosion-resistant - Precision laser calibration with clear, visible beam - Adjustment-free operation for consistent accuracy - Ergonomic tube-straight design for ease of use - Tool-free battery access via threaded tail cap Specifications: - Material: Aluminum alloy - Color: Red or green (optional) - Battery: 1 × CR2, 3 V (included) - Laser power: <5 mW - Beam diameter: 4.2 mm - Item dimensions: 178 × 18 × 18 mm (7.01 × 0.71 × 0.71 in) - Item weight: 60 g (2.12 oz) - Package dimensions: 195 × 104 × 30 mm (7.80 × 4.09 × 1.18 in) - Package weight: 131 g (4.62 oz) Package includes: - 1 × Laser calibrator - 1 × Screwdriver - 12 × Adjustable adapters - 1 × Set of screws - 1 × Wrench Note: Color appearance may vary slightly due to lighting and screen settings. Slight dimensional variations may occur due to manual measurement.