Pointer and Scale: Pointer Length 50-150 mm, Weight 5-20 grams

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

Parameter	Typical range	Notes & selection driver
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

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards

ISO 1101, DIN 43751

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

Typical Suppliers & Equivalents

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

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

Check the legal entity, factory address, ownership, certifications, and direct contacts.

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Manufacturers of Pointer and Scale

Manufacturer profiles associated with Pointer and Scale.

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Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review

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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.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

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.

Pointer and Scale