Unlock Measurement Accuracy: Choosing the Right Contact Point

Small accessories often make the biggest difference in precision measurement. While dial indicators and height gages provide high-precision electronic readouts, the contact point actually touches your workpiece. Selecting the right measuring tip ensures accurate surface tracking, prevents material scratch damage, and protects your instrument calibration.

What Is a Contact Point?

A contact point is the replaceable tip threaded onto the spindle of a dial indicator, test indicator, or linear gage. It transfers tiny physical surface variations directly to the internal measuring mechanism. Depending on your material type and part geometry, you can choose various tip shapes—such as spherical, flat, needle, or roller tips—to optimize your inspection setup.

Major Benefits of Quality Measuring Tips

• Superior Wear Resistance: Premium contact points feature carbide, ruby, or hardened steel tips. These tough materials withstand constant friction without developing flat spots that ruin calibration.

• Match Complex Part Geometry: Specialized shapes let you reach deep grooves, measure thin slots, or sweep across rough surfaces smoothly without snagging.

• Protect Sensitive Workpieces: Non-marking materials like ruby or synthetic sapphire prevent surface scratches on polished optical parts, soft aluminum, and delicate plastics.

• Standardized Threading: Universal M2.5 or 4-48 UNF threads allow technicians to swap points quickly across different indicator brands and inspection stations.

Primary Applications in Quality Control

1. Flatness and Runout Testing: Use flat or ball tips to measure surface variation on rotating shafts and flat plates.

2. Deep Groove Inspections: Attach extended needle points to reach narrow internal channels and deep recessed holes.

3. Continuous Web Monitoring: Mount roller-style points to track moving sheet metal, paper, or plastic film without tearing the material.

4. Soft Material Measurement: Utilize large-diameter flat tips to distribute measuring pressure evenly on soft rubber or foam parts.

Upgrade Your Measuring Setup Today

Worn or improper measuring tips compromise your entire inspection system. Equipping your tools with the ideal contact point guarantees reliable readings, longer instrument life, and better product quality control. Explore our complete selection of indicator contact points today to find the exact tip for your shop setup.

Flat point (Carbide) Many diferent types of contact point to select