Digital Radius Gauge

What type of radii can the equipment measure?

The Nargesa High-Precision Radius Gauge is specifically designed to measure radii on curved parts, both internal and external, as long as the surfaces where the gauge rests are smooth and regular.
This equipment allows for highly accurate verification of the radius of curvature of a wide variety of metal profiles, such as:

Curved tubes
Bent flat bars
Structural profiles
Components formed by bending or rolling

Optimal usage conditions:

The contact surfaces must be flat and clean to ensure an accurate reading.
Its use on rough, irregular, or burr-covered surfaces is not recommended, as this can affect measurement accuracy.
Thanks to its precision and ease of use, this equipment is ideal for quality control, bending verification, and real-time production adjustment, especially in processes such as cold bending, railing manufacturing, metal structures, or urban furniture.

What is the accuracy of the digital gauge?
The Nargesa High-Precision Digital Radius Gauge offers extremely high accuracy, designed to meet dimensional control requirements in demanding industrial applications.

Technical accuracy of the equipment:

Probe error tolerance: ± 0.02 mm
Radius measurement error tolerance: ΔR = (0.01 × R) mm, That is, the error is proportional to the radius size, with only a 1% margin of the measured value.

This allows for reliable and repeatable results, even on large radii up to 11,250 mm (443 inches) with the standard equipment, or up to 20,000 mm with an optional arc, as well as on small radii, thanks to the length and design of the probe.

Factors influencing accuracy:

Surface quality of the part: smooth and clean surfaces improve precision.
Correct positioning of the gauge on the inner or outer curve.
Use of the appropriate arc depending on the radius range to be measured (100 mm, 200 mm, or 300 mm). Optional (400 mm).

Thanks to this precision, the Nargesa digital gauge is ideal for quick verifications during the bending process, without needing to disassemble the part or use manual templates.

Is it suitable for tubes, angles, or curved profiles?

Yes, the Nargesa High-Precision Digital Radius Gauge is fully suitable for measuring radii on tubes, angles, curved profiles, and other elements with circular or curved geometry.

It is also suitable for:

Curved sheet metal or flat bars
Structural profiles made of steel, aluminum, stainless steel, etc.
Wooden parts or plastic materials

Usage conditions:
The only essential requirement is that the part’s surface must be sufficiently smooth and uniform, which ensures proper contact with the gauge and accurate readings. The material does not matter: as long as the surface is curved, clean, and free of irregularities, the equipment can be used reliably.

This makes it ideal for applications in:

Metalworking
Tube and profile bending
Manufacturing of metal furniture or curved structures
Quality control in industrial bending processes

What is the maximum radius size it can analyze?

The Nargesa High-Precision Digital Radius Gauge can analyze a very wide range of radii, from very small radii to large-scale curves. It is capable of measuring:

From 55 mm to 20,000 mm
Or from 2 inches to 787 inches

The equipment comes with three interchangeable standard arcs, plus an optional arc for extremely large radii. The capacity of each arc is detailed below:

Measuring arcs and compatible ranges:

100 mm Arc
- Minimum range: 55 mm (2")
- Maximum range: 625 mm (25")
200 mm Arc
- Minimum range: 125 mm (5")
- Maximum range: 2,500 mm (99")
300 mm Arc
- Minimum range: 475 mm (18")
- Maximum range: 11,250 mm (443")
400 mm Arc (optional)
- Minimum range: 1,000 mm (39")
- Maximum range: 20,000 mm (787")

This additional 400 mm arc, available as an optional accessory, significantly expands the equipment’s capacity, allowing for measurement of radii in large-scale metal structures, industrial bends, metal roofing, architectural arches, etc.

Thanks to this range of arcs, the equipment can be used for radius measurements in a vast variety of parts, from small components to large-scale structures, all with up to 0.01 mm precision and without needing to disassemble the part or create templates.

Is regular calibration necessary?

No, the Nargesa High-Precision Digital Radius Gauge does not require frequent calibration. Its robust and precise design maintains calibration even after intensive use. However, it is recommended to verify or calibrate the equipment in certain situations, such as:

After long periods of inactivity.
If the equipment has been transported, impacted, or stored for extended periods.
When extremely precise readings are required on critical parts.

Calibration process:

Quick and very simple: Takes no more than 15 seconds.
Requires only the flattest and cleanest surface possible.
Performed directly from the equipment itself, with no need for additional tools or specialized personnel.

This easy calibration process allows the user to verify precision at any time, always ensuring reliable results without interrupting the workflow.

Can it be used in industrial or outdoor environments?

Yes, the Nargesa High-Precision Digital Radius Gauge has been specifically designed for use in industrial environments where robustness, precision, and ease of use are required.

It is prepared to work in manufacturing workshops, bending plants, production lines, or assembly areas, withstanding typical industrial conditions such as:

Dust
Vibrations
Frequent handling

It can also be used outdoors, as long as the following are avoided:

Direct exposure to water (rain, splashes, etc.)
Extreme humidity conditions that could affect its electronic components

Although it is a durable and resistant piece of equipment, as a digital precision instrument, it is recommended to protect it from moisture to avoid potential electronic failures or data reading errors.

In short, it is an ideal tool to facilitate bending and forming work on-site, both indoors and outdoors, as long as basic protective precautions are taken.

What is the equipment’s battery life?

The Nargesa High-Precision Digital Radius Gauge operates with a 3V CR2032 lithium battery, included with the equipment. This is the same type of battery used in electronic measuring devices such as digital calipers or digital micrometers.

Battery life depends on usage, but under normal conditions it provides several months of autonomy, even in industrial environments.
Its power consumption is very low, thanks to its efficient LCD screen and auto shut-off system after a period of inactivity.

Advantages:

Easy replacement: the battery can be changed in seconds, with no special tools.
Wide availability: it’s a standard battery, easy to find in any technical or retail store.

In summary, the equipment offers long-lasting and hassle-free battery life, ideal for daily use in professional settings.

Is it compatible with industrial metrology standards?

Yes, the Nargesa High-Precision Digital Radius Gauge is fully compatible with industrial metrology standards, both in terms of accuracy, repeatability, and clarity of result readings.

Features that make it suitable for metrological use:

Controlled and defined error tolerance:
- Maximum radius measurement error: ΔR = (0.01 × R) mm, perfectly traceable and verifiable.
High resolution:
- The digital readout provides clear values in millimeters or inches, with a tolerance comparable to that required in industrial quality control processes.
Repeatability of results:
- Designed for repetitive use in production environments, where consistent measurements are essential.
Simple and traceable calibration:
- Can be quickly verified on a flat surface, and its digital system ensures consistent readings.

Application in industrial environments:

Its precision makes it compatible with control procedures under ISO 9001, ISO 2768, and other industrial quality systems, especially in bending, metal forming, and structural fabrication processes.

Why choose the Nargesa Digital Radius Gauge over other low-cost models?

There are more affordable radius gauge sets on the market, generally equipped with small arcs (25 to 100 mm) and intended for very small radii. However, these models have significant technical limitations that directly affect precision, versatility, and productivity.

Limitations of low-cost models:

Very limited range:
- They cannot measure radii larger than 500 mm, making them useless for larger parts or industrial curved formats.
High inaccuracy:
- Radius calculation errors in these devices are considerably high, especially when attempting to measure large radii where small deviations cause major errors.
Low reliability:
- They often produce inconsistent readings, especially on slightly irregular surfaces or non-standard materials.
Loss of time and money:
- Measurement errors in bending can result in scrapped parts, rework, or even functional failures, increasing production costs and downtime.

Advantages of the Nargesa Digital Radius Gauge:

Very wide measurement range:
- From 55 mm to 11,250 mm, or up to 20,000 mm (787") with the optional 400 mm arc.
Guaranteed high precision:
- Maximum error of 0.01 mm on the radius, ideal for demanding industrial applications.
Total versatility:
- Suitable for measuring internal and external radii on tubes, sheets, flat bars, structural profiles, plastics, or wood.
Direct use on the machine:
- No need to disassemble the part or prepare templates.
Robust, portable, and professional construction, with protective case included.

In summary, while more affordable alternatives exist, the Nargesa Digital Radius Gauge offers a professional and precise solution that prevents costly errors and adapts to a wide variety of industrial applications, resulting in real savings in the medium and long term.