Spectra Precision AL28M Automatic Level

The Spectra Precision AL28M is a rugged and reliable 28x magnification automatic level, purpose-built for elevation control, layout, and construction-grade leveling tasks. Outfitted with a magnetic dampened compensator, the AL28M delivers fast, stable leveling in active environments where jobsite vibrations are common—making it ideal for contractors working near heavy machinery or in high-traffic areas.

The AL28M provides ±2.0 mm accuracy per 1 km of double-run leveling, ensuring dependable results over long distances. It features a bright 30 mm objective lens, 1°20' field of view, and stadia lines for estimating distances. With a minimum focusing distance of just 0.60 m (1.97 ft.), it’s equally effective for close-range setups near buildings or grade stakes. Durable construction, dual-side fine motion knobs, and a high-quality optical system make this a solid choice for professionals who need a step up in magnification without sacrificing durability.

Key Specifications:

• Magnification: 28x
• Accuracy: ±2.0 mm (1 km double-run leveling)
• Dampening System: Magnetic
• Minimum Focus Distance: 0.60 m (1.97 ft.)
• Objective Aperture: 30 mm
• Field of View: 1°20′
• Instrument Weight: ~1.7 kg (3.7 lbs)

What’s Included in Each Package

AL28M Standard Unit

• AL28M Automatic Level (Magnetic Dampened)
• Plumb Bob
• Adjustment Tools
• Rain Hood
• Hard Carrying Case

AL28M-2 Eighths Package

• AL28M Automatic Level
• Plumb Bob
• Adjustment Tools
• Rain Hood
• GR152 Aluminum Grade Rod (8ths)
• 5301-27-BLK-SP Heavy-Duty Tripod
• Hard Carrying Case

Air vs. Magnetic Dampened Levels

The AL28M's magnetic compensator stabilizes faster and resists jobsite vibrations better than air-dampened models, making it perfect for active construction zones. Air-dampened levels (like the AL24A) provide even finer precision but are best suited to calm, stable environments like survey lines or engineering projects.