Leeds & Northrup
 

Potentiometer
Elegant Woodbox Instrument

(EQP) WBM-POT30A
 
  • Description
  • Specifications

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
  • Description
  • Controls
  • Inputs

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
  • Description
  • Specifications

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

 

Resistance Bridge

(EQP) LN-4749
  • Description
  • Specifications

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

$750
 
$725

Resistance Bridge

(EQP) LN-4764
  • Description
  • Specifications

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
 

Capacitance Bridge

(EQP) LN-1187
  • Description
  • Specifications

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

$850
 
$750

Capacitance Bridge

(EQP) LN-1071
  • Description
  • Specifications

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

 

Resistance / Capacitance Bridge

(EQP) LN-569242
  • Description
  • Specifications

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

$895
 
$325

Potentiometer &
Galvanometer

(EQP) WBM-119828
Leeds & Northrup potentiometer & galvanometer. 9" x 20-1/2" x 9-1/4". Mfg. P/N: 119828.
 

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.
$350 each
 
$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!!

 

Glass Electrodes for
pH Measurements

(EQP) 117089
Leeds & Northrup glass electrodes for pH measurements. Brand new in the box!!

$150 each
 
$235 each