Spectra Precision AL24M-1 Automatic Level 24 power with Measuring Rod-Tenths and Tripod

The Spectra Precision AL24M-1 is a professional-grade automatic level built for contractors who need fast, repeatable elevation readings across a full shift. With 24-power magnification and a magnetic compensator that settles in under two seconds, this optical level cuts setup time and keeps your crew moving whether you're grading a parking lot, setting foundation forms, or transferring benchmarks across a large site. The AL24M-1 kit ships complete with a fiberglass tripod and a direct-read measuring rod, so you're ready to work straight out of the box.

Overview: Where the AL24M-1 Earns Its Keep on the Jobsite

Spectra Precision engineered the AL24M-1 around the demands of daily commercial and residential construction use. The instrument body is sealed against dust and moisture, and the horizontal circle allows 360-degree readings for layout and reference work. The included tripod is lightweight but stable enough for paved and soft ground conditions. Whether you're a one-person operation or coordinating a full grading crew, the AL24M-1 delivers the accuracy and durability that keeps jobs on schedule.

Key Specifications

• Magnification: 24x
• Objective Lens Diameter: 36 mm
• Accuracy: ±1.5 mm per km double-run
• Compensator Type: Magnetic damping, self-leveling
• Compensator Range: ±15 arc minutes
• Minimum Focus Distance: 18 inches (0.5 m)
• Field of View at 100 m: 1°30′ / 2.6 m
• Horizontal Circle: 360-degree graduated
• Stadia Ratio: 100:1
• Weight (instrument only): 1.6 kg (3.5 lbs)

What's in the Kit

• Spectra Precision AL24M-1 automatic level instrument
• Fiberglass tripod with quick-clamp legs
• Direct-read fiberglass measuring rod (grade rod)
• Carrying case for instrument and accessories
• Lens cloth and operator manual

Job Applications

Foundation Layout and Elevation Control: Transfer benchmark elevations to batter boards and verify form heights across all corners of a slab or stem-wall foundation. The 24x optic gives you sharp rod readings even when working across a wide foundation footprint.

Site Grading and Drainage Verification: Set grade stakes for cut-and-fill earthwork, confirm finish elevations against civil plans, and verify positive drainage slopes before finish grading is complete. The magnetic compensator holds level even as heavy equipment passes nearby.

Floor and Ceiling Elevation Checks: Confirm floor flatness and ceiling heights during framing and finish phases. The 18-inch minimum focus distance lets you work in tighter interior spaces where longer-range instruments become impractical.

Utility and Infrastructure Grading: Control pipe invert elevations for gravity sewer, storm drain, and irrigation systems where precise slope compliance is a contract requirement. The stadia function lets you estimate distances without a separate tape.

Compatible Accessories

• Replacement Fiberglass Grade Rod — 13 ft direct-read
• Heavy-Duty Aluminum Tripod with Wide-Stance Legs
• Optical Level Carrying Case with Foam Insert
• Spectra Precision Pole Clamp and Target Set
• Sunshade and Lens Filter Kit for Bright Conditions

Related Guides

• How to Set Up and Calibrate an Automatic Level on the Jobsite
• Auto Level vs. Laser Level: Choosing the Right Tool for Your Project
• Reading a Grade Rod: A Contractor's Field Reference
• Foundation Elevation Layout Step-by-Step with an Optical Level

Frequently Asked Questions

Does the AL24M-1 require batteries or any power source?

No. The Spectra Precision AL24M-1 is a fully optical, non-electronic instrument. It requires no batteries, charging, or power connection of any kind. The magnetic compensator is entirely passive, which means there are no electronics to fail or replace in the field.

What is the effective working range of the AL24M-1?

For standard grade rod reading, most crews work effectively between 50 and 300 feet from the instrument. At maximum practical range, the 24x magnification and 36 mm objective lens maintain enough clarity for precise rod readings. Accuracy is rated at ±1.5 mm per km of double-run leveling.

Is the AL24M-1 covered by a warranty?

Spectra Precision backs the AL24M-1 with a manufacturer's warranty covering defects in materials and workmanship. Contact Express Tools for specific warranty terms and service center information, or refer to the documentation included with your instrument.

Can I use the AL24M-1 with a metric grade rod?

Yes. The AL24M-1 optics are compatible with both imperial (feet/inches) and metric (meters/centimeters) grade rods. Simply confirm your rod graduation matches the unit system required by your project plans. Express Tools carries compatible metric and imperial rods separately.