The SP Tools SP35631 Digital Vernier Calipers are precision measuring instruments designed for accurate internal, external, depth, and step measurements in workshop, engineering, automotive, and manufacturing environments.

With a 150mm (6") measuring range and ultra-fine 0.01mm (0.0005") digital resolution, this tool delivers fast, reliable readings for trade professionals who require consistent measurement accuracy in everyday use.

Built from hardened stainless steel and featuring a clear LCD display, it is a dependable alternative to traditional vernier calipers for faster and more efficient measuring.

What These Calipers Are Used For

These digital calipers are designed for precise measurement tasks such as:

• Measuring bolt, shaft, and component diameters
• Checking internal bore sizes and hole dimensions
• Depth measurement of holes and recesses
• Step measurements for machining and fabrication
• Quality control and inspection work
• Automotive and mechanical part verification

Key Features

• 150mm / 6" measuring capacity
• High precision 0.01mm / 0.0005" digital resolution
• Clear LCD display for fast readings
• Inside, outside, depth, and step measurement capability
• Metric and imperial (SAE) conversion
• Zero reset function for comparative measurements
• Smooth sliding action for accurate control
• Hardened stainless steel construction for durability
• Thumb lock for consistent positioning

Why Tradespeople Use Digital Calipers

Compared to manual vernier calipers, the SP35631 offers:

• faster readings with no scale interpretation
• reduced human reading error
• easier use in low-light environments
• quick switching between metric and imperial
• improved efficiency for repetitive measurement tasks

 Ideal for workshops where speed and consistency matter.

Important Accuracy Note (Real-World Use)

While this caliper provides 0.01mm resolution, real-world accuracy depends on:

• measurement technique and pressure applied
• temperature of materials
• condition of jaws and calibration
• material flexibility and surface finish

 For extremely high-precision machining tolerances, micrometers may still be required. Calipers are best suited for general engineering and workshop measurement.

Applications

Widely used in:

Automotive

• engine component measurement
• brake and suspension parts
• sensor and fitting sizing

Engineering & Fabrication

• machined parts inspection
• fabrication tolerances
• workshop quality control

Electrical & General Trade

• conduit and fitting measurement
• component sizing and fitting checks

Build Quality & Design

The SP Tools SP35631 is built for workshop durability with:

• hardened stainless steel body
• smooth sliding mechanism for repeatable accuracy
• robust digital display housing
• corrosion-resistant finish for long service life

Product Specifications

• Product code: SP35631
• Brand: SP Tools
• Measuring range: 0–150mm / 0–6"
• Resolution: 0.01mm / 0.0005"
• Material: Hardened stainless steel
• Display: LCD digital readout
• Functions: Inside, outside, depth, step measurement
• Units: Metric & SAE

Who This Product Is For

Ideal for:

• mechanics and automotive technicians
• engineers and machinists
• workshop fitters and fabricators
• quality control inspectors
• apprentices and trade professionals