Description
Burlington 331 Panel Meter 100UA Full Scale Galvanometer 1844 Ohm Resistance
The Burlington Model 331 is a round analog panel meter designed as a galvanometer-type microammeter with a full-scale deflection of 100 microamperes (100 UA) and a coil resistance of 1844 ohms. The instrument features a dual-scale dial reading from -7.5 to +7.5 on the outer arc and -1.0 to +1.0 on the inner arc, allowing the user to read both a fine and coarse current range from a single pointer. It is built in a cylindrical round housing for flush panel mounting.
Specifications & What's Included
- Brand: Burlington
- Model: 331
- Meter type: Analog panel meter / DC galvanometer
- Full scale deflection: 100 UA (100 microamperes)
- Coil resistance: 1844 ohms
- Scale: Dual — outer arc -7.5 to +7.5, inner arc -1.0 to +1.0
- Mount type: Round panel mount
- Housing: Cylindrical metal case
- Country of manufacture: USA (printed on dial face)
- Included: Meter unit only — no additional accessories
Applications
Panel galvanometers of this type were widely used in mid-20th century scientific instruments, laboratory equipment, and industrial control panels to provide a visible indication of small DC current levels — typically as a null indicator in bridge circuits, a feedback display in servo systems, or a current monitor in precision measurement setups. The center-zero, dual-range dial format is characteristic of instruments used in balance or differential measurement applications, where the operator needs to detect deflection in either direction from a zero reference point. Burlington Instrument Co. was a U.S. manufacturer known for producing panel meters and galvanometers for industrial and scientific use during this era. Instruments of this type remain useful today in vintage equipment restoration, educational demonstrations, electronics labs, and as replacement meters in legacy industrial panels.
This Burlington Model 331 analog panel meter has been inspected and appears to be in good used condition. It was pulled from a working environment where it was previously in service. The front dial face is clean and legible with the scale markings clearly visible. The metal housing shows surface rust and oxidation on the exterior casing and rear, consistent with its age and storage — this is cosmetic and does not affect the meter movement or dial. The pointer appears intact and at rest. Please view our photo set and contact us if you have any questions.
Warranty Information
Additional Information
Brand: |
Burlington |
Model: |
331 |
MPN: |
331 |
Type: |
Analog Panel Meter / Galvanometer |
SKU: |
32914 |
Full Scale Deflection: |
100 UA (100 Microamperes) |
Coil Resistance: |
1844 Ohm |
Measurement Type: |
DC Current (Microamperes) |
Scale Range: |
-7.5 to +7.5 / -1.0 to +1.0 dual scale |
Mount Type: |
Panel Mount |
Form Factor: |
Round Panel Mount |
Condition: |
Used – Pulled from Working Environment |
Country/Region of Manufacture: |
United States |
Seller Notes: |
Unit only; no accessories included. |
Condition Notes: |
Burlington 331 panel meter in good used condition. Pulled from a working environment. Dial face clean and legible; exterior housing shows surface rust and oxidation — cosmetic only. Please contact us with any questions. |
