$38.95 USD $29.95 USD SAVE 23%

Description
The Tape Measure That Can Measure Curves

Smart Digital Rolling Tape Measure

Experience precision beyond the straight line. This compact device utilizes a high-precision digital encoder to measure flat surfaces, curves, cylinders, and irregular shapes with millimeter-level accuracy.

LCD Display USB-C Charging Pocket Size
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Measure Anything, Anywhere

Unlike traditional tape measures that struggle with non-linear objects, this rolling ruler glides effortlessly along curved surfaces. Whether you are measuring the diameter of a pipe, the arc of a chair back, or the hem of clothing, the digital readout provides instant results.

  • Plane measurement for flat surfaces
  • Curved measurement for arcs and cylinders
  • Ideal for tailors, craftsmen, and DIY projects
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8 Functions in One Device

Consolidate your toolbox with a single handheld unit. The device supports linear, circular arc, arbitrary curve, and cylindrical diameter measurements. It also features accumulation/subtraction math and automatic unit switching between Metric (cm/m) and Imperial (in/ft).

Unit Switching Accumulation Math Audio Prompts
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Precision Engineered

Powered by an STM32 microprocessor and a high-precision digital encoder, this tool ensures consistent accuracy up to ±0.05%. The rechargeable 200mAh battery charges via USB-C in just 5 minutes, providing hours of continuous use without the hassle of replacing batteries.

  • Aluminum Alloy & Silicone construction
  • Up to 99 meters cumulative range
  • 10 sets of historical data storage

Specifications

Dimensions: 53 x 53 mm (approx. 2.1 x 2.1 inches)
Measurement Range: Single: 0-9m | Cumulative: Up to 99.99m
Battery: 200mAh Lithium Polymer (Rechargeable) 
Charging Time: Approx. 5 Minutes (Fast Charge)   
Display: HD LCD Screen

Frequently Asked Questions

How does the rolling wheel work on uneven surfaces?
The bottom rubber wheel rotates as you drag it across the object. High-precision gears inside translate the wheel's rotation into distance data, allowing it to accurately follow curves, circles, and irregular contours that standard tape measures cannot track.
Can I switch between inches and centimeters?
Yes. The device features a dedicated unit switching function. You can easily toggle between metric (cm/m) and imperial (in/ft) units using the touch buttons on the front panel to suit your specific project requirements.
Is the battery replaceable?
No, it uses a built-in rechargeable lithium polymer battery. It charges quickly via the side USB-C port in approximately 5 minutes and provides enough power for extended usage sessions, eliminating the need for disposable batteries.