Spectra Precision 4852-16 Heavy Duty Collumn Clamp

Rock-Solid Laser Mounting for Posts, Pipes, and Structural Columns

When your grade work or alignment layout depends on a laser that stays put, the Spectra Precision 4852-16 Heavy Duty Column Clamp is the mounting solution built for serious jobsite conditions. Designed to grip round columns ranging from 2 to 16 inches in diameter, this industrial-strength clamp locks your rotary or pipe laser firmly in place on temporary construction posts, structural steel columns, or permanent concrete pillars — keeping your reference plane accurate even when heavy equipment is operating nearby.

Product Overview & Jobsite Applications

The 4852-16 is engineered for contractors who can't afford setup drift mid-pour or mid-layout. Whether you're setting finish floor grades across a warehouse slab, controlling elevation on a multi-story concrete deck, or running pipe grade through a tight mechanical room, this clamp eliminates the guesswork of improvised mounting. The reinforced frame resists flex under vibration, and the dual clamping mechanism distributes grip force evenly around the column so the instrument platform stays level and locked regardless of site activity. Authorized Spectra Precision accessory — fully compatible with the Spectra accessory mounting ecosystem.

Key Specifications

• Column Diameter Range: 2 inches to 16 inches (round columns)
• Compatible Column Types: Temporary wood or steel posts, structural steel tube columns, concrete pillars, schedule pipe
• Mounting Interface: Standard instrument platform for Spectra Precision laser heads
• Construction: Heavy-duty reinforced frame — resists jobsite abuse and vibration-induced drift
• Clamping Mechanism: Dual-point clamping for balanced, secure grip around column circumference
• Manufacturer: Spectra Precision (Trimble)
• Part Number: 4852-16

Key Features

• Grips round columns from 2–16 inches — covers standard 2x lumber posts through large-diameter structural steel
• Reinforced frame construction prevents flex and micro-movement under vibration from compactors, forklifts, and concrete equipment
• Dual clamping points distribute load evenly, preventing column surface damage and ensuring consistent instrument level
• Instrument platform compatible with Spectra Precision rotary and pipe lasers
• Fast field setup — adjusts and locks without specialized tools
• Durable enough for repeated daily use across multi-phase projects

Job Applications

Concrete Slab Grade Control: Clamp your rotary laser to an existing column or temporary post at center slab — hold consistent elevation reference across the full pour without repositioning.

Structural Steel Alignment: Mount to steel tube columns during steel erection to project a consistent vertical or horizontal reference plane for beam and connection point layout.

Mechanical & Plumbing Pipe Grade: Use on schedule pipe columns in mechanical rooms or utility corridors where tripod footprint isn't practical — keeps your pipe laser stable at working height.

Multi-Story Elevation Control: Secure your laser to floor deck temporary posts level-by-level to maintain consistent datum transfer during vertical construction without re-establishing grade from scratch.

Compatible Accessories

• Spectra Precision HV302 Horizontal/Vertical Rotary Laser
• Spectra Precision LL300N Self-Leveling Laser Level
• Spectra Precision HR320 Pipe Laser
• Spectra Precision Detector Holder Rod Clamp
• Spectra Precision Universal Tripod Mount Adapter

Related Guides

• How to Choose the Right Laser Mounting Accessory for Your Jobsite
• Rotary Laser Setup Best Practices for Concrete Grade Work
• Spectra Precision Laser Accessories Compatibility Guide
• Column Clamp vs. Tripod: Which Laser Mount Is Right for Your Application?

Frequently Asked Questions

What column diameters does the Spectra Precision 4852-16 accommodate?

The 4852-16 is designed to grip round columns ranging from 2 inches to 16 inches in diameter, covering everything from standard temporary lumber posts and schedule pipe to large structural steel tube columns commonly found on commercial and industrial sites.

Will this clamp work with any Spectra Precision laser, or only specific models?

The 4852-16 uses a standard Spectra Precision instrument mounting platform that is compatible with a wide range of Spectra rotary and pipe lasers. For confirmation of compatibility with a specific model, contact our team or refer to your instrument's accessory compatibility list.

Can the 4852-16 be used on non-circular columns or square posts?

The 4852-16 is specifically engineered for round column profiles. Its dual clamping mechanism is curved to maximize contact and grip on cylindrical surfaces. It is not designed for square or rectangular posts and may not provide a secure mount on those profiles.

How do I prevent the clamp from damaging a finished or coated column surface?

For finished or coated surfaces, use a protective wrap or rubber shim between the clamp jaws and the column face before tightening. This distributes clamping pressure and prevents surface scoring while still maintaining a secure, drift-free instrument hold.