Sokkia 1005154-01 Measuring Rod 20-foot Fiberglass 10ths - Topcon

The Sokkia 1005154-01 is a 20-foot fiberglass leveling rod built to the demands of active construction sites and survey crews. Graduated in tenths, this rectangular CR-type rod delivers the clear, readable markings that graders and instrument operators depend on for accurate cut-and-fill work, elevation transfers, and grade checks from the ground up. Fiberglass construction keeps the rod lightweight, dimensionally stable in changing temperatures, and non-conductive — a critical safety advantage near overhead utilities or energized equipment.

Overview & Jobsite Applications

Designed for both surveyors and construction graders, the Sokkia 1005154-01 handles the full range of earthwork elevation tasks without compromise. The rectangular cross-section with rounded back corners sits comfortably in the rodman's hand during long positioning sequences, and the CR-type face format is universally compatible with optical levels, digital levels, and laser receivers commonly found on grading and site-development projects. Whether you're shooting grades on a road subgrade, setting storm drain inverts, or confirming pad elevations on a commercial foundation, this rod performs reliably under jobsite abuse.

Key Specifications

• Model: Sokkia 1005154-01
• Total Length: 20 feet
• Graduation: Tenths of a foot
• Rod Type: CR-type rectangular
• Material: Fiberglass
• Cross-Section: Rectangular with rounded back corners
• Graduation Style: Full-face 10-foot interval markings
• Compatibility: Optical levels, digital levels, laser receivers
• Non-conductive: Yes — fiberglass construction

Key Features

• Full 20-foot measurement range eliminates the need to reposition the rod on deep cut operations
• Tenths graduation provides the precision required for earthwork tolerances on DOT and commercial grading specs
• Fiberglass construction resists warping, swelling, and dimensional change across temperature swings common on outdoor jobsites
• Rectangular CR-type face is compatible with the widest range of leveling instruments in active use
• Rounded back corners reduce hand fatigue during extended rodman shifts
• Non-conductive fiberglass body improves safety near power lines and energized infrastructure
• High-contrast graduation markings maintain visibility at distance under varying light conditions
• Durable enough for repeated jobsite handling, transport in truck beds, and rough field conditions

Job Applications

Road & Highway Subgrade Grading: Shoot subgrade elevations accurately at stakeout intervals using the full 20-foot rod length, minimizing rod moves on deep cut sections typical of highway construction.

Commercial Site Development: Verify pad, parking lot, and utility trench elevations against design grades on commercial building projects where tolerances are tight and inspection documentation is required.

Storm Drain & Utility Invert Checks: Lower the rod into manholes and drainage structures to confirm invert elevations during installation — the CR graduation in tenths provides the resolution needed for proper slope verification.

Topographic Survey Control: Use as a standard leveling rod for differential leveling loops establishing site benchmarks or confirming control network elevations before construction begins.

Compatible Accessories

• Sokkia Rod Level / Circular Bubble
• Fiberglass Rod Carrying Case
• Rod Target for Extended Sight Distances
• Sokkia Optical Automatic Levels
• Laser Grade Receiver for Grade Rod Use

Related Guides

• How to Read a CR-Type Leveling Rod in Tenths
• Differential Leveling Field Procedures for Construction Sites
• Choosing the Right Leveling Rod Length for Your Project
• Fiberglass vs. Aluminum Leveling Rods: Contractor's Guide

Frequently Asked Questions

Is the Sokkia 1005154-01 compatible with digital levels?

The 1005154-01 is a CR-type graduated rod, which is compatible with optical automatic levels and laser receivers. For use with electronic digital levels that use bar-code rods, you would need a Sokkia-specific bar-code rod. Confirm your instrument's rod requirements before purchase — contact our team if you need help matching rod to instrument.

What does "graduated in tenths" mean for construction layout?

Tenths graduation means the rod is marked in increments of 0.1 foot, which is the standard unit used in construction surveying and earthwork grading in the United States. This allows crews to read and record elevations to the nearest tenth without conversion, matching the format used on most civil engineering plans and grade sheets.

How does fiberglass compare to aluminum for a leveling rod?

Fiberglass rods offer two primary advantages over aluminum: they are non-conductive, making them safer near overhead power lines, and they are more dimensionally stable in wet or humid conditions since fiberglass does not absorb moisture. Aluminum rods are generally stiffer, but fiberglass is the preferred material on most active construction sites for safety and durability reasons.

Can this rod be used with a laser level or grade laser?

Yes. The Sokkia 1005154-01 can be used as a grade rod in conjunction with a rotating laser level and a compatible laser detector/receiver. The receiver is clamped to the rod and detects the laser beam, allowing a single operator to read grade without an instrument operator behind a level. Verify detector clamp compatibility with the rod's cross-section before ordering a receiver.