Analog Moving Coil Instrument MR66

Quick Answer: The Analog Moving Coil Instrument MR66 is a permanent-magnet moving-coil meter that indicates one electrical quantity through pointer movement over a calibrated analog scale, housed in the MR66 case format. LabEquip can confirm the exact measured quantity, range and dimensions for this model before you order.

Description

This instrument uses a conventional moving-coil indication principle: current through the coil, positioned in a permanent magnetic field, produces a torque that moves the pointer, while a control spring provides opposing torque so that pointer position represents the applied electrical input within the calibrated range. As an analog instrument it shows gradual changes and fluctuations continuously, which is useful for observing trends that a digital readout can miss between updates.

“MR66” identifies the instrument’s model or housing pattern rather than a fixed measured quantity or range — please confirm with our sales team exactly which quantity (such as voltage or current), range, and case dimensions apply to this specific unit before specifying it for a panel or trainer.

Specifications

Care & Maintenance

• Avoid mechanical shocks and drops, which can bend the pointer or damage the moving-coil suspension.
• Do not exceed the rated input, as sustained overload can damage the coil or spring.
• Keep the meter face and terminals clean and free of dust.
• Store and mount the instrument so the pointer is not obstructed and the scale stays readable.
• Have the meter periodically checked against a reference standard if used for calibrated measurement work.

Why Choose LabEquip

LabEquip supplies analog and digital measuring instruments for schools, colleges and training institutes, with a team that can confirm the exact quantity, range and case dimensions before you buy. Browse our full Measuring Instruments range or our complete Physics Lab Products catalogue. For help choosing, email [email protected].

Frequently Asked Questions

What does “MR66” refer to?

MR66 identifies the instrument’s model or housing pattern rather than the measured quantity or range. Please confirm exact dimensions with our sales team.

What electrical quantity does it measure?

This is model-dependent. Our sales team can confirm the exact measured quantity and range before you order.

Why choose an analog meter instead of a digital one?

An analog moving-coil meter shows gradual changes and fluctuations continuously through pointer movement, which some users find easier for observing trends than a digital numeric readout.

Can it be panel-mounted into a trainer or switchboard?

It is designed to be mounted into a compatible panel or trainer chassis where the cutout size matches the MR66 housing. Please confirm mounting dimensions before purchase.

Does it need calibration?

Like other analog moving-coil meters, accuracy can drift over time and with mechanical shock, so periodic checking against a reference standard is recommended for calibrated work.

Does it need an external power supply?

A basic moving-coil meter is typically driven directly by the quantity being measured rather than needing a separate power supply, but please confirm this for your specific configuration with our team.

Last Updated: September 2026