H-303 Standard Vernier Caliper Hardened Stainless Steel, MetricImperial Dual Scale, Multiple Resolution Options Hoshing

H-303 Standard Vernier Caliper | Hardened Stainless Steel, Metric/Imperial Dual Scale, Multiple Resolution Options Hoshing

Industrial-grade standard mechanical vernier caliper machined from full hardened stainless steel, available in 150mm / 200mm / 300mm measuring ranges with multiple resolution options: 0.02mm high-precision metric, 0.05mm standard metric, 0.001" decimal imperial and 1/128" fractional imperial. Supports 4-in-1 outside, inside, depth and step measurement with a purely mechanical structure requiring no batteries. Precision-etched wear-resistant scales deliver long-term clear readability. Single-unit retail supported with no minimum order quantity, ideal for daily dimensional inspection in machining, quality control, automotive repair, woodworking and vocational training scenarios.
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Description

The H-303 series standard vernier caliper is a reliable entry-level industrial measuring tool built for general workshop and daily inspection applications. Its all-mechanical vernier reading structure eliminates dependence on batteries and electronic components, operating stably in dusty, oily and high-vibration workshop environments with zero risk of sudden power failure. Machined from one-piece hardened stainless steel, it balances dependable accuracy and long-term durability, serving as a standard basic measuring instrument for production workshops, maintenance stations and educational laboratories.
  1. Full Hardened Stainless Steel Durable Construction
    The entire beam and measuring jaws are precision machined from hardened stainless steel, featuring high hardness, excellent wear resistance and corrosion protection. Frequent opening and closing during daily measurement will not cause jaw wear or beam deformation, maintaining stable measurement accuracy over long service life. The finely finished surface resists oil and fingerprint adhesion for easy daily cleaning and maintenance.
  2. Multiple Range & Resolution Configurations
    Three mainstream measuring ranges — 150mm, 200mm and 300mm — are available to match workpiece sizes of different dimensions. Multiple scale resolution versions are offered to suit different usage scenarios:
  • 0.02mm metric high-resolution version: for precision machining, mold making and other high-accuracy requirements
  • 0.05mm metric standard-resolution version: balances reading speed and accuracy for fast workshop inspection
  • 0.001" decimal imperial / 1/128" fractional imperial versions: compatible with overseas engineering drawings, woodworking and imperial workpiece measurement
    All scale graduations are produced with a precision etching process, sharp and clear, resistant to wear and fading after years of frequent use.
  1. 4-in-1 Versatile Measurement Functions
    One caliper covers four common dimensional inspection tasks: outside diameter (OD), inside diameter (ID), depth and step dimensions, meeting most daily measurement needs in machining, assembly and quality control workflows. The precision ground measuring jaws ensure tight parallel contact with workpiece surfaces for consistent, trustworthy readings across all measurement modes.
  2. Smooth Sliding & Secure Locking Design
    The sliding carriage moves smoothly without sticking or excessive backlash. A side locking screw secures the slider at any position, allowing operators to remove the caliper from the workpiece for reading and data recording, improving efficiency during batch inspection.

Core Retail Selling Points

✅ Zero minimum order limit, single-unit retail supported for individual users and small workshop restock
✅ Full hardened stainless steel one-piece construction, wear and corrosion resistant for daily heavy use
✅ Three measuring ranges: 0–150mm / 0–200mm / 0–300mm to match different workpiece sizes
✅ Multiple resolution options: 0.02mm / 0.05mm metric, 0.001" / 1/128" imperial for diverse requirements
✅ Precision-etched wear-resistant scales, sharp and clear, resistant to fading after long-term use
✅ 4-in-1 measurement: outside diameter, inside diameter, depth and step dimensions in one tool
✅ Purely mechanical vernier structure, no batteries required, reliable in harsh dusty/oily workshop environments
✅ Smooth sliding mechanism + locking screw for convenient off-part reading and data recording
✅ Cost-effective basic workshop measuring tool with low long-term maintenance cost
✅ 12-month retail warranty against manufacturing and accuracy defects

Standard Specification

Order No. Measuring Range Resolution Accuracy
H-303-151 0 – 150mm 0.02mm ±0.03mm
H-303-201 0 – 200mm 0.02mm ±0.03mm
H-303-301 0 – 300mm 0.02mm ±0.04mm
H-303-152 0 – 150mm / 0 – 6" 0.02mm / 0.001" ±0.03mm
H-303-202 0 – 200mm / 0 – 8" 0.02mm / 0.001" ±0.03mm
H-303-302 0 – 300mm / 0 – 12" 0.02mm / 0.001" ±0.04mm
H-303-155 0 – 150mm / 0 – 6" 0.05mm / 1/128" ±0.03mm
H-303-205 0 – 200mm / 0 – 8" 0.05mm / 1/128" ±0.03mm
H-303-305 0 – 300mm / 0 – 12" 0.05mm / 1/128" ±0.04mm

Target Retail Buyers

Machining workshop operators, hardware processing workers, automotive repair technicians, woodworking craftsmen, frontline quality control inspectors, vocational training instructors, 3D printing enthusiasts, DIY hobbyists, small hardware repair shop owners.

Applications

CNC Machining

Ideal for CNC lathe, milling and machining center operations, ensuring high-precision dimensional control and reliable tool holding for mass production.

Quality Control Labs

Suitable for quality inspection departments and calibration labs, providing accurate measurement data to verify product compliance with ISO and industry standards.

Mold & Die Making

Perfect for mold and die workshops, where micron-level precision tools and gauges are essential for complex cavity machining and final inspection.

OEM/ODM Projects

Customizable solutions for OEM and ODM manufacturing partners, offering tailored measuring tools and CNC accessories to meet unique production requirements.

Automotive Manufacturing

Designed for automotive component production lines, ensuring consistent precision and durability in engine parts, transmission components and assembly processes.

Aerospace & Precision Engineering

Ideal for aerospace and defense manufacturing, where ultra-high precision instruments and reliable tool holders meet strict quality and safety requirements.

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