Leeds & Northrup Test Equipment
Process Instruments supplies and supports all L&N legacy test equipment products. See the below list for models currently in stock. Parts, repair and calibration service are available for all models. Please contact us for availability, as quantities of certain items are limited.
| Model |
Description |
| 464 |
Test Set |
| 900 |
Numatron indicator |
| 913 |
Numatron indicator |
| 920 |
Numatron indicator |
| 930 |
Numatron indicator |
| 939 |
Numatron auxiliary |
| 1056 |
Capacitor, fixed |
| 1058 |
Capacitor, variable |
| 1070 |
Capacitor, 3-dial |
| 1071 |
Capacitor, 3-dial, precision |
| 1520 |
Inductor, variable |
| 1530 |
Inductor, fixed |
| 2350 |
Galvanometer |
| 2400 |
Galvanometer |
| 2430 |
Galvanometer |
| 2437 |
Null Detector |
| 2460 |
Galvanometer |
| 2730 |
Digital printer |
| 2760 |
Precision voltmeter |
| 3100 |
Rotary switch series |
| 3294 |
Knife switch |
| 3702 |
Key switch |
| 4001 |
NBS type stand |
| 4232-B |
Precision Wheatstone Bridge |
| 4249 |
Megohm Conductance Standard |
| 4258 |
Kohlrausch Slidewire |
| 4271 |
Percent Limit Bridge |
| 4282 |
Portable Wheatstone Bridge |
| 4283 |
Portable Wheatstone Bridge |
| 4285 |
Kelvin Bridge |
| 4286 |
Kelvin Bridge |
| 4287 |
Kelvin Bridge |
| 4288 |
Portable Kelvin Bridge |
| 4320 |
Kelvin Ratio Box |
| 4393 |
Ratio Set |
| 4395 |
Voltage Divider |
| 4397 |
Precision Voltage Divider |
| 4398 |
Precision Ratio Set |
| 4399 |
Precision Divider |
| 4666 |
Jones bridge |
| 4760 |
Wheatstone Bridge |
| 5300 |
Type S Test Set |
| 5305 |
Type S2 Test Set |
| 5430 |
Type U Test Set |
| 6800 |
Macbeth Illuminometer |
| 7308 |
Standard Cell |
| 7311 |
Standard Voltage Reference |
| 7401 |
pH Meter |
| 7405 |
pH Meter |
| 7414 |
pH Meter |
| 7552 |
K-2 Potentiometer |
| 7553 |
K-3 Potentiometer |
| 7553-AX |
K-3 Potentiometer Facility |
| 7554 |
K-4 Potentiometer |
| 7554-AX |
K-4 Potentiometer Facility |
| 7555 |
K-5 Potentiometer |
| 7555-AX |
K-5 Potentiometer Facility |
| 7556 |
K-6 Potentiometer |
| 7556-AX |
K-6 Potentiometer Facility |
| 7582 |
Volt Box |
| 7592 |
Volt Box |
| 7593 |
Volt Box |
| 7594 |
Precision Volt Box |
| 8017 |
Portable Temperature Bridge |
| 8064 |
Portable Temperature Bridge |
| 8069 |
Mueller Bridge, G-2 |
| 8078 |
Portable Temperature Bridge |
| 8079 |
ER Thermometer Bridge |
| 8163-B |
Platinum Resistance Thermometer |
| 8167-B |
Platinum Resistance Thermometer |
| 8248-X |
Switch Units |
| 8256-X |
Rotary Switches |
| 8257-X |
Rotary Switches |
| 8401 |
Precision Bath |
| 8403 |
Bridge and Bath |
| 8410 |
Steam Point Apparatus |
| 8411-X |
Fixed Temperature Standard |
| 8620 |
Optical Pyrometer |
| 8627 |
Optical Pyrometer |
| 8630 |
Optical Pyrometer |
| 8640 |
Automatic Optical Pyrometer |
| 8641 |
Automatic Optical Pyrometer |
| 8646 |
Automatic Optical Pyrometer |
| 8656 |
Portable Potentiometer |
| 8657 |
Portable Potentiometer |
| 8686 |
Portable Potentiometer |
| 8690 |
Portable Potentiometer |
| 8691 |
Portable Potentiometer |
| 8692 |
Portable Potentiometer |
| 8693 |
Portable Potentiometer |
| 8694 |
Portable Potentiometer |
| 8695 |
Portable Potentiometer |
| 8696 |
Portable Potentiometer |
| 8700-X |
Reference Thermocouple |
| 8710-B |
Reference Thermocouple |
| 9009 |
Calibrating Furnace |
| 9009-AX |
Calibrating Furnace System |
| 9696 |
Portable Calibrator |
| 9828 |
Null Detector |
| 9829 |
Linear Amplifier |
| 9834 |
Null Detector |
| 9835 |
Null Detector |
| 9836 |
Null Detector |
| 9838 |
Null Detector |
| 9844 |
Null Detector |
| 9876 |
Power Supply |
| 9878 |
Voltage Reference |
| 9879 |
Voltage Reference |
| 9912 |
Run-Up Box |
| 9914 |
Loop Tester |
| 9919 |
Portable Calibrator |
