Round Hole Marker – Magnetic Angle-Adjustable Marking Tool with Compass-Like Precision

Product Introduction

In precision metal fabrication and pipe installation, a misaligned hole means scrapped material, wasted hours, and compromised structural integrity. The margin for error is zero.

This tool eliminates the guesswork.

Engineered from anodized aluminum with a switchable magnetic base, precision angle adjustment, and elliptical marking capability — all in one. Meets shop-floor demands for repeatable accuracy on flat steel, curved pipes, and hard-to-reach angles. No clamps. No helpers. No re-dos.

Product Features

🧲 Magnetic base with ON/OFF switch + V-groove for pipes
Activate the magnet to lock onto any ferrous surface or curved pipe. No need to hold it in place. The V-groove ensures secure grip on round surfaces.

📐 90-degree adjustable extension arm
Extends from the magnet base at a right angle, reaching tight spaces and awkward positions. Mark holes where other tools can't go.

🎯 Angle adjustment for circle center positioning
Fine-tune the shaft angle to locate the exact center axis – just like a compass. Ensures perfectly centered marks on every workpiece.

⭕ Axis tilt for elliptical markings
Adjust the shaft angle to mark ellipses with the same precision as circles. One tool covers both geometry types for versatile project needs.

Product Specifications

 Round Hole Marker

• Material: Anodized aluminum
• Base: Switchable magnet + V-groove
• Arm: 90-degree extension
• Marking Functions: Circles (center-axis) and ellipses (tilt-axis)
• Marking Tool: Soapstone marker (replaceable)
• Included: Rugged hard case + refill soapstones
  

🧲 50 kg Magnetic Grip | 🔧 5,000+ Cycles Tested
📐 ±0.5 mm Accuracy | 🛡️ Industrial-Grade Build

Package Contents

• 1 × Round hole marker
• 1 × User manual

What our users say:

⭐⭐⭐⭐⭐ (4.9/5 based on 270+ shop-floor reviews)

"Marked over 200 pipe flanges — every hole dead center. The angle lock doesn't drift, the magnet holds like it's welded on. This thing pays for itself in saved material alone."

— Dave R., Welding Supervisor, 22 years in metal fabrication

✨ ±0.5 mm is not a nominal value, it’s our bottom line. Align perfectly once, zero rework needed.