When you're setting line and grade for sewer mains, storm drain runs, or utility conduit, your pipe laser has to sit at the exact invert height to give you a reliable reference beam. The Topcon 329390060 Pipe Laser Leg Set delivers four factory-engineered legs that raise your Topcon pipe laser precisely to the correct elevation inside a 10-inch pipe—so your crew can drive grade with confidence from the first shot to the last manhole.
Product Overview & Jobsite Applications
These OEM Topcon legs are purpose-built for contractors running 10-inch diameter pipe on municipal sewer projects, subdivision infrastructure, commercial site work, and heavy civil jobs. Rather than improvising a makeshift stand or risking beam offset errors, you install the correct factory legs and know your instrument is positioned exactly as Topcon's engineers intended. The result is repeatable, auditable accuracy on every run—critical when inspectors are checking finished invert elevations against design plans.
Key Specifications
- OEM Part Number: 329390060
- Manufacturer: Topcon Positioning Systems
- Pipe Diameter Compatibility: 10-inch (nominal) pipe
- Quantity: Set of 4 legs
- Leg Function: Positions laser beam at correct invert reference height
- Compatibility: Fits Topcon pipe laser models requiring 10" legs
- Part Type: Genuine OEM replacement/accessory
What's in the Kit
- 4 × Topcon factory pipe laser legs sized for 10-inch pipe
- Engineered to Topcon's dimensional tolerances for beam-center accuracy
- Durable construction rated for daily jobsite use
- Drop-in installation—no tools or modification required
- Sold as a complete set to support full instrument setup
Job Applications
Municipal Sewer Main Installation: Set consistent invert-to-beam height across long runs so your grade checker can shoot directly to the target without correction factors.
Storm Drain Construction: Keep your pipe laser stable and correctly elevated inside 10-inch storm drain pipe while your crew adjusts grade in real time based on beam position.
Utility Conduit Runs: Whether you're laying electrical or communications conduit in 10-inch casing, correct leg height ensures your alignment beam tracks the true centerline of the bore.
Replacement After Field Damage: A bent or broken leg introduces measurement error immediately. Swapping in a factory set restores your instrument to spec without sending the laser in for service.
Compatible Accessories
- Topcon Pipe Laser Targets
- Topcon TP-L5 Pipe Laser
- Topcon Pipe Laser Carrying Case
- Topcon Pipe Laser Leg Sets — Other Sizes
- Topcon Pipe Laser Batteries & Chargers
Related Guides
- How to Set Up a Pipe Laser for Line and Grade
- Choosing the Right Pipe Laser Leg Height for Your Pipe Size
- Topcon Pipe Laser Accessories Buying Guide
- Sewer Installation Grade Tolerance Reference Guide
Frequently Asked Questions
- Will these legs fit all Topcon pipe laser models?
- The 329390060 leg set is designed for Topcon pipe lasers that accommodate 10-inch pipe legs. Most current Topcon pipe laser models use a common leg-mount interface, but you should confirm your specific model number against Topcon's compatibility list or contact Express Tools to verify fitment before ordering.
- Why do I need the correct leg height instead of just estimating?
- The pipe laser beam must be positioned at a known, repeatable offset from the pipe invert. Using the wrong leg height shifts the beam reference up or down, introducing a systematic grade error that compounds over the entire run. Factory-sized legs eliminate that variable entirely.
- Can I use these legs in wet or muddy conditions inside a pipe?
- Yes. The legs are built for real jobsite conditions, including the damp, muddy interior environments common in sewer and storm drain installation. Rinse them off after use to extend service life.
- What if I only need to replace one broken leg—do I have to buy a full set?
- Topcon and Express Tools supply these as a set of four to ensure all legs are dimensionally matched from the same production batch. Mixing old and new legs of the same nominal size is generally fine, but a matched set guarantees consistent beam elevation and is the recommended practice for precision work.
Frequently Asked Questions
Will these legs fit all Topcon pipe laser models?
The 329390060 leg set is designed for Topcon pipe lasers that accommodate 10-inch pipe legs. Most current Topcon pipe laser models use a common leg-mount interface, but you should confirm your specific model number against Topcon's compatibility list or contact Express Tools to verify fitment before ordering.
Why do I need the correct leg height instead of just estimating?
The pipe laser beam must be positioned at a known, repeatable offset from the pipe invert. Using the wrong leg height shifts the beam reference up or down, introducing a systematic grade error that compounds over the entire run. Factory-sized legs eliminate that variable entirely.
Can I use these legs in wet or muddy conditions inside a pipe?
Yes. The legs are built for real jobsite conditions, including the damp, muddy interior environments common in sewer and storm drain installation. Rinse them off after use to extend service life.
What if I only need to replace one broken leg—do I have to buy a full set?
Topcon and Express Tools supply these as a set of four to ensure all legs are dimensionally matched from the same production batch. Mixing old and new legs of the same nominal size is generally fine, but a matched set guarantees consistent beam elevation and is the recommended practice for precision work.
