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Precision Linear Scales &
Digital Readout (DRO) Systems

Manufactured in China with cutting-edge technology. Trusted by CNC professionals worldwide for accuracy, durability, and seamless integration.

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About Pinrui DRO

Zhejiang Pinrui Precision Instrument Co., Ltd. (Yongkang Pinrui E-commerce Firm) is a professional manufacturer of optical linear scales and digital readout (DRO) systems in China. Specializing in high-precision measurement solutions for CNC machines, we serve industries ranging from milling and machining to automation and quality control.

With three dedicated production lines — two for linear scales and one for DRO systems — we ensure strict quality control and consistent output. Our R&D team has developed advanced readerhead Version 3.0 for optical systems, enhancing signal stability and resistance to environmental interference.

3
Production Lines
1+
Year Warranty
ISO9001
Certified
Factory or Product Image

Company Strength

Guided by our tenet — "High Quality, High Efficiency, Top Service" — we are committed to delivering full satisfaction to every user. Our dedicated team works tirelessly to innovate and improve, ensuring that every product meets international standards.

  • ISO9001 Certified Quality Management
  • In-House R&D and Manufacturing
  • Global Distribution Network

Our Service

We offer high-quality products backed by a one-year warranty. Beyond hardware, we provide complete integration solutions including power supply systems, PLC motors (step or servo), touchscreen systems, and programming support.

Whether you need help selecting the right linear scale or configuring a full DRO system, our team is ready to assist.

Our Products

Precision-engineered linear scales and digital readout systems designed for reliability, accuracy, and ease of integration.

Linear Scale with Digital Readout

Linear Scale with Digital Readout

Optical glass scale with high-resolution digital display for milling machines and CNC applications.

  • • Resolution: 0.001mm / 0.00005"
  • • Output: TTL or RS422
  • • IP64 Protection
2 Axis DRO with Linear Scale

2-Axis Digital Readout (DRO)

Compact 2-axis DRO system with integrated linear scales for benchtop mills and lathes.

  • • 5.7" LCD Display
  • • Absolute/Incremental Modes
  • • Metric/Imperial Conversion
Glass Linear Scale System

Glass Linear Scale System

High-precision glass encoder scale for industrial CNC machines requiring micron-level accuracy.

  • • Scale Length: Up to 3000mm
  • • Thermal Expansion Coefficient: ±0.5ppm
  • • Readerhead Version 3.0
7 inch LCD DRO

7" LCD Digital Readout (DRO)

Large touchscreen DRO with intuitive interface for multi-axis control and data logging.

  • • 7" Color LCD Touchscreen
  • • 3-Axis Support
  • • USB Export & Preset Functions
Magnetic Linear Scale

Magnetic Linear Scales

Robust magnetic encoder strips ideal for harsh environments with coolant, dust, or vibration.

  • • Non-contact Sensing
  • • IP67 Rated
  • • Easy Installation
Digital Caliper

Digital Caliper & Vernier

Precision handheld measuring tools with digital display and data output capability.

  • • Range: 0-150mm / 0-6"
  • • Resolution: 0.01mm
  • • SPC Output Available
PLC/5V to 24V Transducer

PLC/5V to 24V Transducer

Signal converter for interfacing low-voltage DRO systems with industrial PLCs.

  • • Input: 5V TTL
  • • Output: 24V PNP/NPN
  • • Isolated Circuitry
Drill Mill Cutter Grinder

Drill & Mill Cutter Grinder

Precision tool grinder for maintaining cutting tools used in CNC and manual machining.

  • • 3-Axis Manual Control
  • • Diamond Wheel Option
  • • Angle Calibration Scale
Digital Protractor

Digital Protractor

Electronic angle measurement tool with high-resolution display and data hold function.

  • • Range: 0–360°
  • • Accuracy: ±0.1°
  • • Auto-Zero Function
Electric Tapping Machine

Electric Tapping Machine

Compact tapping unit for precise thread cutting in metal and plastic materials.

  • • Variable Speed Control
  • • Reverse Function
  • • 110V/220V Options

Why Choose Pinrui DRO?

High Accuracy

Our optical and magnetic scales deliver micron-level precision with stable signal output.

Complete Solutions

From DRO systems to PLC integration, we offer full technical support and customization.

Global Support

Distributors in Brazil, Mexico, Korea, South Africa, and UAE ensure fast delivery and local service.

10K+
Units Sold
50+
Countries
ISO9001
Certified
1 YR
Warranty

Frequently Asked Questions

What is a DRO system?

A Digital Readout (DRO) system displays real-time position data from linear scales mounted on machine tools, improving accuracy and productivity.

Can I integrate your DRO with my CNC machine?

Yes, our DRO systems support standard outputs (TTL, RS422) and can interface with most CNC controllers and PLCs.

Do you offer custom scale lengths?

Yes, we manufacture linear scales in custom lengths up to 3000mm for special applications.

Is technical support available?

Yes, our team provides installation guidance, troubleshooting, and programming support.

Get in Touch

Have questions about our products or need a quote? Reach out to our team directly.

Contact Information

Contact: Paul Lee

Phone: +86 170 9776 9619

Tel: +86 400 884 1889 / 0579-87301889

Email: sales@prdro.com

Address: No. 618, Tongan Rd, Changcheng Industrial Zone, Yongkang, Zhejiang, China

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