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"

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

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

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

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

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

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