Find the perfect tape for your specific measurement application—Outside Diameter, Inside Diameter, O-Ring, Circumference, and Digital measurement solutions
Since 1944
Choosing the correct measurement type is essential for achieving accurate, repeatable results. Pi Tape® precision measuring tapes are engineered for specific measurement scenarios—each designed to eliminate common sources of error and ensure confidence in critical dimensions.
Used to measure the external diameter of cylindrical objects such as pipes, shafts, rollers, and tubes.
Common Applications: Pipe inspection, aerospace shafts, manufacturing QA
→ Best choice when measuring the outside surface of a round object.
Designed to measure the internal diameter of pipes, bores, and hollow components with high accuracy.
Common Applications: Pipe fittings, engine bores, machined housings
→ Best choice when measuring the internal opening of a rigid component.
Specialized inside diameter measurement for soft or elastic materials, such as O-rings and seals.
Common Applications: Aerospace seals, hydraulic systems, quality inspection
→ Best choice for flexible or soft-walled components.
Measures the total circumference of an object without conversion to diameter.
Common Applications: Field measurement, cable bundles, large assemblies
→ Best choice when circumference is the required specification
Electronic precision tapes that provide instant digital readouts with unit conversion.
Common Applications: Manufacturing, quality control, inspection reporting
→ Best choice for fast, repeatable measurements and digital workflows.
Used to measure straight-line distances such as length or width.
Common Applications: Part length verification, flat stock inspection, general dimensional measurement
→ Best choice when measuring straight dimensions rather than round geometry.
Pi Tape® measuring tapes are manufactured using carefully selected steel alloys that provide long-term dimensional stability, resistance to stretch, and consistent performance in demanding industrial environments.
The industry benchmark for precision measurement. This high-carbon spring steel offers excellent tensile strength and minimal thermal expansion, helping maintain accuracy even with temperature changes.
Designed for environments where corrosion resistance is critical. This stainless steel option delivers reliable precision while protecting against rust and oxidation, making it ideal for harsh, outdoor, or chemical-exposed applications. Commonly used in digital measurement solutions.
Built on the same 1095 spring steel foundation, this option adds a durable blue finish for improved readability in low-light or high-glare conditions—without compromising accuracy.
All Pi Tape® steels are selected to minimize expansion, resist deformation, and support ISO/IEC 17025-traceable calibration, ensuring dependable measurements in mission-critical applications.
Pi Tape® precision measuring tapes are available worldwide through a trusted network of authorized distributors. Our global distribution partners ensure fast access to calibrated tools, local expertise, and responsive customer support—wherever precision measurement is required.
