H-151 Vernier Depth Gauge | Hardened Stainless Steel, 0.02mm Resolution, Multiple Ranges Hoshing

Industrial vernier depth gauge dedicated to precise depth measurement, fully constructed from hardened stainless steel with 0.02mm / 0.0001" resolution. Six measuring ranges cover 0–150mm up to 0–1000mm, equipped with a flat reference base and fine adjustment mechanism for stable, repeatable depth readings. Fully mechanical battery-free design, widely used for hole depth, groove depth, step recess and counterbore inspection in CNC machining, mold making and quality control departments. Single-unit retail supported with no minimum order quantity.

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Description

The H-151 series vernier depth gauge is a specialized precision measuring tool designed exclusively for depth dimension inspection. Different from standard general-purpose Calipers , its wide flat reference base provides a stable flat benchmark against workpiece surfaces, eliminating tilt errors during depth probing and delivering far higher consistency for deep hole, blind hole, groove and step depth measurement. Adopting a traditional vernier mechanical structure, it works reliably in dusty, oily, high-vibration workshop environments without relying on batteries or electronic components.

Flat Reference Base for Stable Benchmark Measurement

The wide, precision-lapped rectangular base sits flush on workpiece top surfaces, forming a perpendicular reference plane for the measuring probe. This design prevents rocking and inclination during measurement, effectively avoiding inaccurate readings common when using ordinary caliper depth blades for deep dimension detection.
Hardened Stainless Steel Industrial Construction

The entire rule, sliding carriage and reference base are manufactured from high-grade hardened stainless steel, with anti-corrosion surface treatment. Precision-ground measuring surfaces deliver excellent wear resistance and long-term dimensional stability, resisting deformation and edge wear after thousands of repeated depth probing operations.
Fine Adjustment Mechanism for Precise Positioning

Built-in fine adjustment screw enables slow, controlled advancement of the measuring rule, allowing operators to gently seat the probe onto the bottom of blind holes or recesses for highly accurate readings, ideal for tight-tolerance precision inspection requirements. A locking screw secures the sliding position for convenient off-workpiece reading and recording.
Clear Etched Vernier Scale with Fixed High Resolution

Precision-etched wear-resistant vernier scale with fixed 0.02mm metric / 0.0001" imperial resolution, delivering stable ±0.02mm basic accuracy. Markings remain legible after years of workshop use, no fading or abrasion. Fully mechanical structure eliminates downtime caused by dead batteries or electronic circuit failure.
Six Size Options Cover Full Application Requirements

Six standard measuring ranges from 150mm up to 1000mm, covering small precision blind holes to deep large cavity depth measurement needs for heavy-duty machined parts, molds and structural components.

Core Retail Selling Points

✅ Zero minimum order limit, single-unit retail for machinists, QC labs and workshop stock replenishment

✅ Specialized depth measurement design with flat reference base, prevents tilt and measurement deviation

✅ Hardened full stainless steel build, corrosion resistant and long-term wear resistant

✅ Fixed 0.02mm / 0.0001" resolution, basic accuracy ±0.02mm for reliable precision

✅ Six range options: 0–150mm to 0–1000mm for small to deep large-size depth inspection

✅ Fine adjustment mechanism + locking screw for precise positioning and stable reading

✅ Fully mechanical vernier design, battery-free, stable for harsh oily/dusty workshop environments

✅ Permanently etched scale graduations, resistant to fading and abrasion

✅ Ideal for hole depth, counterbore, groove, step recess depth inspection

✅ 12-month retail warranty against manufacturing and accuracy defects

Standard Specification

Order No.	Measuring Range	Resolution
H-151-150	0 – 150mm / 0 – 6"	0.02mm / 0.0001"
H-151-200	0 – 200mm / 0 – 8"	0.02mm / 0.0001"
H-151-300	0 – 300mm / 0 – 12"	0.02mm / 0.0001"
H-151-500	0 – 500mm / 0 – 20"	0.02mm / 0.0001"
H-151-600	0 – 600mm / 0 – 24"	0.02mm / 0.0001"
H-151-1000	0 – 1000mm / 0 – 40"	0.02mm / 0.0001"

Base Material: Hardened Stainless Steel

Basic Accuracy: ±0.02mm

Operation Type: Mechanical Vernier with Fine Adjustment

Target Retail Buyers

CNC machining operators, mold manufacturing technicians, production line QC inspectors, automotive component inspectors, hardware processing workshop supervisors, industrial maintenance engineers, vocational machining training labs, precision component manufacturers.

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.