GJD-1 Manual Lensmeter, Ophthalmic Optical Instrument with Self-Calibration

Features

• Hassle-Free Self-Calibration, Zero Operation Barrier: Equipped with intelligent self-calibration function, no complicated debugging process is needed. You can quickly get accurate measurement data once turned on, with strong stability. Even beginners can easily operate it, suitable for testing various common lenses of 20-85mm.
• Dual Power Adaptation, No Usage Limitations: Innovative dual power design allows flexible switching between DC power supply and battery power supply modes, breaking the limitations of usage scenarios. It can be fixed in the store for long-term use or moved flexibly to meet multi-scenario optometry needs.
• Multi-Directional Adjustable Design, Suitable for All Users: The elevation angle of the device can be freely adjusted to fit the sitting posture and usage habits of different operators. The lens holder and stage can be finely adjusted to fix the lens accurately, making the measurement operation more labor-saving and smooth.
• High-Precision Configuration, Zero Data Error: Equipped with a dedicated astigmatism axis adjustment component, it can accurately calibrate astigmatism parameters. The diopter adjustment range reaches 20D with a minimum scale of only 0.1D, ensuring clear and intuitive readings, eliminating measurement deviations, and guaranteeing optometry professionalism.
• Dust-Proof Protection Design, Extend Device Life: Both the eyepiece and objective lens are equipped with special protective covers, which effectively isolate dust and impurities from entering the optical components. Remove the protective covers before use for calibration, and put them back in time after use to effectively protect the device's precision and extend its service life.

Description

The CHENNTAI GJD-1 Manual Lensmeter is a professional ophthalmic tool for optometry shops, eyewear retailers, and optical specialists. It combines user- friendliness, high precision, and portability for daily lens testing and optometric tasks. Its built-in self-calibration function delivers stable, accurate results without complex manual calibration. It fits 20-85mm diameter lenses, covering most common sizes and lens types. Portability is a key advantage: dual power (DC for indoor use, battery for mobile work) suits in- store operations and on-site services, with a compact design that adapts to any workspace. For accuracy, it has an astigmatism axis handwheel for precise adjustment, plus a diopter handwheel (±20D range, 0.1 minimum scale) for reliable measurement data—supporting professional optometric services. To preserve performance, each eyepiece and objective has a protective cover: remove both before powering on/calibrating, and replace after use to prevent dust buildup, extending service life. Specifications: Brand: CHENNTAI; Model: GJD-1; Dimensions: 18.50×12.60×8.27 inch; Weight: 9.9208 lb; Diopter Range: ±20D (0.1 scale); Compatible Lens Diameter: 20-85mm. Ideal for professional opticians, eyewear store owners, or anyone needing a reliable lens tool—simple to use, portable, precise, and durable.

Package Dimensions: ‎18.5 x 12.6 x 8.27 inches

Item Weight: ‎9.93 pounds

Manufacturer: ‎CHENNTAI

Date First Available: ‎February 27, 2026