Leeds & Northrup
Potentiometer
Elegant Woodbox Instrument
(EQP) WBM-POT30A
Leeds & Northrup potentiometer. Elegant woodbox instrument. 17-3/4" x 8-3/4" x 8-1/4" high.
    Ranges:
  • 1 ohm / 1.5 amp
  • 0.5 ohm / 3 amp
  • 0.2 ohm / 7.5 amp
  • 0.1 ohm / 15 amp
  • 0.05 ohm / 30 amp
$250
Universal
Potentiometer
(EQP) LN-K3
Leeds & Northrup K3. A very useful lab instrument. Used, but in good physical condition. Resolution to 1.6000 volts dialed with main - four center knobs.
    Controls include:
  • Auxilliary pot graduated 0 - 15
  • EMF, Aux EMF, STD, Rev EMF, Check
  • SC resolution 1.0175-1.0205 with Coarse - Medium and Fine knobs
    Inputs include:
  • Battery +2.6v and +3.3v
  • SC ±
  • Galvanometer 0, 100, 400, 2,000 & 10,000
  • EMF ±
  • Aux EMF ±
  • Galvanometer Sense "Low-Medium-High"
$895
Resistance Bridge
(EQP) LN-4750
Leeds & Northrup 4750 resistance bridge. Used, but in good physical condition.
  • Resolution of 0.01 ohm
  • Wood cabinet
  • Range: 0.01 ohm to 10k ohm
  • Dimensions: 8" x 13" x 6-1/4" high
  • Serial numbers: 538126 and 547536
$750
Resistance Bridge
(EQP) LN-4749
Leeds & Northrup 4749 resistance bridge. Used, but in good physical condition.
  • Resolution of 0.01 ohm
  • Wood cabinet
  • Range: 0.01 ohm to 10k ohm
  • Dimensions: 8" x 13" x 6-1/4" high
  • Serial number: 552226
$725
Resistance Bridge
(EQP) LN-4764
Leeds & Northrup 4764 Resistance Bridge. Used, but in good physical condition.
  • Resolution of 0.01 ohm
  • Wood cabinet
  • Range: 0.01 ohm to 10k ohm
  • Dimensions: 10" x 16" x 6-1/4"H
  • Serial number: 878193
$850
Capacitance Bridge
(EQP) LN-1187
Leeds & Northrup 1187 capacitance bridge. Used, but in good physical condition.
  • Resolution of fractional pF
  • Wood cabinet
  • Range: 100 pF to 1200 pF
  • Vernier range: -50 to + 100 pF
  • Dimensions: 8-3/4" x 15-3/8" x 6-1/4"H
  • Serial numbers: 875238 and 871364
$750
Capacitance Bridge
(EQP) LN-1071
Leeds & Northrup 1071 capacitance bridge. Used, but in good physical condition.
  • Resolution of 0.001 µF
  • Wood cabinet
  • Range: 0.001 µF to 1.11 µF
  • Dimensions: 8-3/4" x 15-3/8" x 6-1/4"H
  • Serial number: 672824
$895
Resistance / Capacitance Bridge
(EQP) LN-569242
Leeds & Northrup resistance - capacitance bridge. The only identifing number we see is the serial number.
  • Resistance settings: 0, 1, 3.1623, 10, 31.623, 100, 316.23, 1000, 3162.3 ohms
  • Capacity settings: 0 - 100 - continuous
  • Dimensions: 5-7/8" x 10-1/2" x 6-1/4"H
  • Serial number: 569242
  • Wood cabinet
$325
Potentiometer &
Galvanometer
(EQP) WBM-119828
Leeds & Northrup potentiometer & galvanometer. 9" x 20-1/2" x 9-1/4". Mfg. P/N: 119828.
$350 each
Antique Portable Galvanometer
600 ohms
(EQP) WBM-2420-C
Leeds & Northrup antique portable galvanometer. Portable D'Arsonval-type moving coil reflecting galvanometer. A galvanometer detects and measures electric current. The D'Arsonval type has a light coil of wire suspended by an even small metal ribbon. Sens: 0.003 uc / mm; 600 ohms c.d.r.x, 28.1 second period, resistance 13.4. Sold as is.
$125
Calomel Reference Electrode
(EQP) 117105
Leeds & Northrup calomel reference electrodes. This electrode is part of a larger system which is NOT included. Brand new in the box!!
$150 each
Glass Electrodes for
pH Measurements
(EQP) 117089
Leeds & Northrup glass electrodes for pH measurements. Brand new in the box!!
$235 each