712289 LEEDS NORTHRUP Potentiometer Indicator Galvanometer

Review LEEDS NORTHRUP And Potentiometer Indicator Galvanometer Wood Crate

The Leeds & Northrup 712289 Potentiometer Indicator Galvanometer is a high-precision measuring instrument designed for use with potentiometers and other voltage dividers. This wooden-cased instrument features a sensitive galvanometer tube, which provides a visual indication of the electrical current flowing through a circuit.

The potentiometer indicator galvanometer is ideal for applications where accurate voltage measurement and calibration are essential. The instrument is capable of measuring DC voltages with an accuracy of /- 0.5% of full scale, making it an excellent choice for use in laboratories, calibration facilities, and other precise measurement environments.

The wooden case of the instrument not only provides a classic and elegant appearance but also helps to shield the sensitive components from external electrical interference and vibrations. The case is well-constructed and features a smooth, polished finish that adds to the instrument's overall aesthetic appeal.

The galvanometer tube is equipped with a fine wire filament that glows brightly when an electrical current passes through it. The brightness of the filament provides a proportional indication of the voltage being measured, making it easy to read and interpret the results. The tube is protected by a glass bulb, which helps to maintain a vacuum inside the tube and preserve its sensitivity and accuracy.

The instrument is calibrated using a precision reference voltage source and comes with a calibration certificate that verifies its accuracy. The calibration certificate also includes the instrument's full scale deflection voltage (FSDV) and resistance values, making it easy to use the instrument in a variety of applications.

The Leeds & Northrup 712289 Potentiometer Indicator Galvanometer also features a number of convenient operating features, including a zero adjustment knob that allows the user to null out the deflection when no voltage is applied to the instrument, and a shunt resistor that can be used to increase the instrument's sensitivity for low voltage measurements.

Overall, the Leeds & Northrup 712289 Potentiometer Indicator Galvanometer is a versatile and high-precision measuring instrument that is well-suited for use in a variety of applications where accurate voltage measurement and calibration are essential. Its classic wooden case, sensitive galvanometer tube, and convenient operating features make it a valuable addition to any laboratory or precision measurement environment.

The Leeds and Northrup 712289 Potentiometer Indicator Galvanometer is an electrical testing instrument used to measure resistance and compare it to a known standard. Here are some pros and cons of buying this particular model:

1. High Accuracy: This galvanometer is known for its high accuracy and precision, making it an ideal choice for calibrating and testing various types of resistors and potentiometers.

2. Versatile: The Leeds and Northrup 712289 can be used for a wide range of applications, including measuring resistance, comparing resistance, and checking for open or short circuits.

3. Rugged Construction: This instrument is built to last with a heavy-duty metal case and high-quality components.

4. Easy to Use: The instrument features a clear and easy-to-read scale, making it simple to use even for those with little experience in electrical testing.

1. Expensive: The Leeds and Northrup 712289 is a high-end instrument and can be quite pricey compared to other models on the market.

2. Requires Calibration: To ensure accurate readings, this instrument needs to be calibrated regularly. This can add to the cost and time required to use it.

3. Large Size: The instrument is relatively large and heavy, making it less portable than some other options.

The Leeds and Northrup 712289 Potentiometer Indicator Galvanometer is a high-quality and accurate instrument that is well-suited for a variety of electrical testing applications. However, its high cost, need for regular calibration, and large size may make it a less practical choice for some users. Ultimately, the decision to purchase this instrument will depend on the specific needs and budget of the user.

If you require a high degree of accuracy and precision for your electrical testing applications and have the budget for it, the Leeds and Northrup 712289 Potentiometer Indicator Galvanometer is an excellent choice. However, if you have limited budget or require a more portable instrument, there are other options available on the market that may better fit your needs.

Details:

Please review all pictures details on condition. Selling for parts or repair since not sure if it works. This listing is for a Leeds and Northrup potentiometer indicator machine. Selling as is, shown in the pictures for parts or repair.

It has not been tested. Wood en crate is broken, lid detached and doesn close since part of the lock missing.

specifications passivecompos:

• brand: Leeds Northrup
• mpn: 712289
• part type: Wood Indicator
• custom item specific: Good For Parts Not Working

seller passivecompos:

• # reviews: 863
• rating: 100.0%
• city: oxnard, california

payments passivecompos:

• other
• credit card: mastercard
• wallet: paypal

offer passivecompos:

• best offers: true
• availability: in stock
• options: ship-to-home
• sold #: 9
• in stock #: 5
• prices: $45.00–$75.00
• item condition:
  • Used
  • For parts or not working
• started: january 14, 2026

returns passivecompos:

• policy: no returns

general passivecompos:

• category: Business & Industrial > Passive Components > Variable Resistors > Potentiometers

shipping passivecompos:

• service: usps ground advantage
• class: standard
• transit: 6-12 days
• type: calculated
• carrier: usps