INDUSTRY COMPONENT

Pointer and Scale

A precision pointer and calibrated scale assembly used for visual position indication in moving coil mechanisms.

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Component Specifications

Definition
The pointer and scale is a calibrated measurement component consisting of a lightweight pointer attached to the moving coil and a fixed graduated scale, providing precise visual indication of angular displacement or position in electromechanical instruments. It converts electrical signals into readable mechanical positions through the coil's movement.
Working Principle
When current flows through the moving coil, it generates a magnetic field that interacts with a permanent magnet, causing rotational torque. This rotation moves the attached pointer across the calibrated scale, with the pointer's position proportional to the current magnitude, allowing direct reading of measured values.
Materials
Pointer: Aluminum alloy or lightweight plastic; Scale: Anodized aluminum, glass, or high-grade plastic with printed or etched markings; Mounting hardware: Stainless steel or brass.
Technical Parameters
  • Weight 5-20 grams
  • Accuracy ±1% of full scale
  • Resolution 0.5-2% of scale length
  • Scale Range 0-100 units (customizable)
  • Pointer Length 50-150 mm
  • Operating Temperature -20°C to +60°C
Standards
ISO 1101, DIN 43751

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Pointer and Scale.

moving coil pointer calibrated scale measurement indicator electromechanical instrument analog display pointer assembly scale graduation Pointer and Scale Pointer and Scale in Machinery and Equipment Manufacturing

Parent Products

This component is used in the following industrial products

Moving coil mechanism

A precision electromechanical component that converts electrical current into rotational motion through electromagnetic interaction.

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Engineering Analysis

Risks & Mitigation
  • Pointer misalignment causing reading errors
  • Scale fading or damage from environmental exposure
  • Mechanical wear in pivot points
  • Magnetic interference affecting accuracy
FMEA Triads
Trigger: Improper installation or mechanical shock
Failure: Pointer bent or misaligned
Mitigation: Use protective covers during installation and implement shock-absorbing mounts
Trigger: UV exposure or chemical contamination
Failure: Scale markings fade or become illegible
Mitigation: Use UV-resistant materials and protective coatings
Trigger: Bearing wear or contamination
Failure: Pointer sticks or shows hysteresis
Mitigation: Regular maintenance with proper lubrication and dust seals

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
Pointer alignment within ±0.5° of true zero, scale graduation accuracy within ±1% of indicated value
Test Method
Optical comparator measurement for pointer alignment, calibrated reference instrument comparison for scale accuracy

Procurement Evaluation Criteria

Not customer reviews or live demand data. These dimensions support RFQ preparation and supplier evaluation.

Technical documentation
4/5
Manufacturing capability
4/5
Inspection readiness
5/5
Supplier transparency
3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

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Frequently Asked Questions

What is the purpose of the pointer and scale in a moving coil mechanism?

It provides a visual readout of electrical measurements by converting coil movement into a readable position on a calibrated scale.

How is the scale calibrated?

Scales are calibrated against known reference standards using precision equipment to ensure accurate linear or logarithmic graduation matching the coil's movement characteristics.

Can pointer and scale components be customized?

Yes, they can be customized for specific measurement ranges, scale types (linear/logarithmic), colors, and environmental requirements.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

Data Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

Preliminary Technical Classification
This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

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