Sokkia 1005153-01 Measuring Rod 20-foot Fiberglass INCHES - Topcon

Sokkia 1005153-01 — Built for Daily Grade and Elevation Work on the Jobsite

The Sokkia 1005153-01 is a 20-foot fiberglass CR (construction-grade) leveling rod engineered for contractors, surveyors, and field crews who need reliable readings across demanding site conditions. Its fiberglass construction resists warping, moisture absorption, and dimensional shift caused by temperature swings — keeping your rod accurate from the first shot in the morning to the last one at quitting time. Whether you're staking excavation depths, verifying subgrade elevations, or setting grades for utilities and concrete flatwork, this rod is built to hold up and read fast.

Overview and Jobsite Applications

Designed to CR specifications, the Sokkia 1005153-01 features high-contrast graduation markings optimized for readability at distance through optical levels, laser levels, and digital levels. The 20-foot length covers standard excavation depths and most vertical elevation change scenarios without requiring rod extensions, reducing setup time and potential reading error. The rod's rectangular cross-section with rounded back edge seats securely on grade stakes, hubs, and benchmark pins, giving rod persons a stable hold during instrument shots.

Key Specifications

• Model Number: Sokkia 1005153-01
• Total Length: 20 feet
• Graduation Type: CR (Construction-Grade) in inches
• Material: Fiberglass composite
• Cross-Section: Rectangular with rounded back edge
• Graduation Visibility: High-contrast markings for optical, laser, and digital level compatibility
• Temperature Stability: Fiberglass construction minimizes thermal expansion and contraction
• Compatibility: Works with optical dumpy levels, automatic levels, laser levels, and digital levels

Key Features

• Fiberglass construction resists warping, moisture, and UV degradation for extended field life
• CR-standard inch graduations meet contractor and public works grade staking requirements
• 20-foot single-section reach eliminates extension rod errors on deep excavation shots
• High-contrast face markings readable at standard instrument distances across most site conditions
• Durable finish holds up to daily handling, transport in rod bags, and contact with soil and concrete
• Lightweight fiberglass keeps rod person fatigue low during long staking sessions
• Stable rectangular back edge for consistent rod placement on hubs and grade stakes

Job Applications

Excavation Depth Control: Set the rod on the excavation floor and shoot grades quickly with your automatic or laser level. The 20-foot length covers most cut depths in residential and light commercial work without stacking extensions.

Subgrade and Base Course Verification: Use the Sokkia 1005153-01 to check subgrade and aggregate base elevations against design grade before paving. CR inch graduations make on-the-fly calculations straightforward for field crews.

Utility and Pipeline Grade Staking: Rod up on invert elevations during storm drain, sanitary sewer, and water main installation. The rod's stability and readability under repeated picks and moves makes it a reliable tool for utility grading crews.

Concrete Flatwork and Foundation Layout: Confirm form heights, footing depths, and finished floor elevations with consistent rod shots before and during concrete placement to catch errors before they become costly.

Compatible Accessories

• Sokkia Fiberglass Rod Bag — protect your rod during transport and storage
• Sokkia Rod Level / Circular Bubble — ensure plumb rod holds for accurate shots
• Sokkia Automatic Optical Level — pair with this rod for precise elevation control
• Sokkia Tripod — stable instrument platform for long-distance rod shots
• Grade Rod Target — improves readability in low-light or high-glare conditions

Related Guides

• How to Read a CR Grade Rod in the Field
• Choosing the Right Leveling Rod Length for Your Project
• Optical Level vs. Laser Level: Which Is Right for Your Crew?
• Proper Grade Rod Care and Storage to Maximize Rod Life

Frequently Asked Questions

What does "CR" mean on a leveling rod?

CR stands for Construction-grade Rod. CR rods use inch-based graduations formatted for general construction use, including grade staking, excavation depth control, and elevation verification. They are distinct from E-grade (engineer's) or Philadelphia-style rods used in more precise surveying applications.

Is the Sokkia 1005153-01 compatible with laser levels?

Yes. The high-contrast CR graduation markings on the Sokkia 1005153-01 are compatible with optical automatic levels, rotary laser levels, and digital levels. For laser detector use, a laser receiver or grade rod target may be attached to improve accuracy and visibility.

Does fiberglass construction affect the accuracy of the rod?

Fiberglass is preferred over wood for its dimensional stability. Wood rods can swell, shrink, or warp with moisture and temperature changes, affecting graduation spacing. Fiberglass rods like the Sokkia 1005153-01 maintain consistent dimensions across typical field temperature ranges, preserving reading accuracy over the rod's service life.

Do I need a rod bag or case for this leveling rod?

While the Sokkia 1005153-01 is built to withstand field conditions, a rod bag or carrying case is strongly recommended to protect the graduation face from scratches, abrasion, and UV exposure during transport. Damaged markings can reduce readability and cause reading errors, so protecting the rod face extends its usable life significantly.