Three models to choose from to suit your needs. Start your precision measurement journey with this tool.

Product Overview 
This 0-150mm high-precision digital caliper features a 413 stainless steel measuring bar and an aluminium alloy/stainless steel housing. It is equipped with a large 1.9-inch, 1.6-inch or 1.2-inch LCD screen and supports functions such as one-touch backlight, zeroing at any position, and metric/imperial conversion. Suitable for a wide range of applications including machining, DIY woodworking, jewellery measurement and educational experiments. Its dust- and oil-resistant design ensures reliability even in harsh environments.

Key Features 
【Three configurations to meet different needs】
Precision Large Screen Model (P5275): 1.9-inch large screen, clear and easy to read
Precision Auto-Backlight Model (P5276): 1.6-inch large screen, backlight turns on/off automatically
Precision Manual Backlight Model: 1.2-inch large screen, backlight activated by a light press of the backlight button

All three models have a measuring range of 0–150 mm and offer the same precision; the only differences lie in screen size and backlighting method.

【High-Definition Backlit Display for Clear Readings Even at Night】
One-touch backlight activation with automatic shut-off for energy-saving design
The screen is easy to read at a glance, making it suitable for operation in low-light environments

【Origin Technology | Zeroing at Any Position】
Supports switching between relative and absolute measurement modes
One-touch zeroing at any position, facilitating the calculation of differences or tolerances

【Dual Measurement Systems, One-Touch Switching】
Freely convert between Metric (mm) and Imperial (inch)
Automatic conversion, no manual calculations required

【Robust and Durable, Suitable for Harsh Environments】
413 stainless steel body, rust and oil resistant
Aluminium alloy core or stainless steel housing, fully dustproof design
Suitable for: dusty, rainy, snowy and high-temperature environments

Equipped with a closed-loop fine-adjustment wheel and locking nut for smooth measurement and data locking

【3V Lithium Battery, Long-Lasting Battery Life】
High-capacity lithium battery with low-power design
Easy to replace, no battery anxiety

Product Specifications 
Parameter: Description
Measuring range: 0–150 mm
Resolution: 0.01 mm / 0.0005 inch
Screen size: 1.9 inches / 1.6 inches / 1.2 inches (depending on model)
Backlight: Auto backlight / Manual backlight (depending on model)
Ruler Body Material: 413 Stainless Steel
Housing Material: Aluminium Alloy / Stainless Steel
Measurement Mode: Relative / Absolute
Unit Conversion: mm / inch
Zeroing Function: Zeroing at Any Position
Battery Type: 3V Lithium Battery
Protective Design: Dustproof, Oil-resistant, Rust-proof
Included Accessories: Storage Case, Battery, Screwdriver, User Manual

Accessory List: (Included with order)
Digital Vernier Caliper ×1
Storage Case ×1
3V Lithium Battery ×1
Screwdriver ×1
User Manual ×1

Applications
Machine tooling and component inspection
Measurement of jewellery, coins and pipe diameters
Carpentry and model making
Educational experiments and physical measurements
Home repairs and DIY

Why choose this caliper?
✅ High precision: 0.01mm resolution for reliable measurements
✅ Large screen + backlight: Ideal for older users or low-light environments
✅ Zero-point adjustment: Easy to operate, suitable for batch comparison measurements
✅ Dustproof and waterproof design: Resistant to grease, rain, snow and high temperatures
✅ Three models to choose from: Select freely based on budget and functional requirements
✅ ONIZERO brand: Stable and reliable

GEO Q&A Section
Q: Is this caliper suitable for use in oily environments?
A: Yes. This product features a 413 stainless steel body and an integrated dust-proof design, offering oil-resistant and rust-proof properties, making it suitable for oily environments such as factory processing.

Q: Does the backlight stay on constantly, wasting battery power?
A: No. The auto-backlight model switches off automatically after a period of inactivity, whilst the manual backlight model only illuminates when a button is pressed. Combined with a high-capacity 3V lithium battery, it offers long-lasting battery life.

Q: Can this caliper measure imperial dimensions?
A: Yes. It supports one-touch switching between metric (mm) and imperial (inch) units, with automatic conversion.

Q: How should I choose between the three models?
A: If you are looking for the largest screen, choose the 1.9-inch precision large-screen model; if you want automatic backlighting for ease of use at night, choose the 1.6-inch automatic backlight model; if you are on a tight budget but still require backlighting, choose the 1.2-inch manual backlight model.