The Johnson Level 40-6242 Green Laser Precision Level is engineered for professionals requiring precise level and plumb measurements. This tool incorporates industrial-grade optics, wedge prisms factory calibrated for optical precision, and a solid aluminum frame for unmatched durability. With its bright green laser dots and easy-to-read recessed level vials, this level is perfect for site layouts, slope measurements, conveyor alignment, and transit work. Designed for reliability, it ensures long-term accuracy without field adjustments.
Key Features:
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Built-In Level and Plumb Vials: Provides precise level and plumb measurements using a factory-set precision level vial and two plumb vials.
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Bright Green Laser Dots: Ensures exceptional visibility, even in challenging lighting conditions.
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Industrial-Grade Optics: Fully coated for maximum performance and enhanced durability.
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Solid Aluminum Frame: The one-piece case design is weather-protected and resists bending or twisting under pressure.
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Recessed and Protected Vials: Ensures easy readability while protecting against damage in rugged environments.
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Machined Flat Working Edge: Achieves a flatness tolerance of 0.005 inches, ensuring accurate reference surfaces.
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Mounting Compatibility: Features a 1/4"-20 thread mounting hole, allowing secure attachment to standard camera tripods for standalone operation.
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Battery-Powered with Long Runtime: Operates continuously for over 30 hours on 2 AA alkaline batteries or 40+ hours on lithium batteries.
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Optical Calibration: Wedge prisms are factory calibrated, eliminating the need for field adjustments or set screws.
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Solid Brass End Caps: Provides long-lasting durability for years of trouble-free service.
Specifications:
- Laser Wavelength: 635nm (Red), 532nm (Green)
- Laser Classification: Class IIIa (Red), Class II (Green)
- Maximum Power Output: <5mW (Red), <1mW (Green)
- Accuracy: ±1/16" at 100'
- Level Vial Accuracy: ±1/8" at 100'
- Plumb Vial Accuracy: ±1/4" at 20'
- Power Supply: 2 AA "MN1500" alkaline batteries (30+ hours runtime) or 2 "CR123A" lithium photo batteries (40+ hours runtime)
- Dimensions: 1" x 0.125" x 13"
- Weight: Less than 20 oz.
- Warranty: 1 Year Manufacturer’s Warranty
Frequently Asked Questions (FAQ)
Q1: Does the laser require frequent calibration?
No, the wedge prisms are factory calibrated, so no field adjustments are required.
Q2: How long do the batteries last during operation?
It runs for over 30 hours with 2 AA alkaline batteries and over 40 hours with lithium photo batteries.
Q3: How visible is the green laser dot in bright conditions?
The bright green laser dots provide exceptional visibility, even in well-lit environments.
Q4: Is this level suitable for first-time users?
Yes, its simple operation and intuitive design make it suitable for both professionals and beginners.
Q5: Does the laser support cross-line projections?
No, this tool projects bright green laser dots for precise marking and alignment.
Q6: Can the laser be used in transit or grade work?
Yes, it is perfect for grade and transit tasks, offering reliable precision.
Q7: What maintenance is required for this level?
Minimal maintenance is needed. Regularly clean the lens and check the battery life for optimal performance.
