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Vintage Weston Cell Eppley Laboratory, Antique Leeds & Northrup Standard Battery
Vintage Weston Cell Eppley Laboratory, Antique Leeds & Northrup Standard Battery

$79.95

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LEEDS & NORTHRUP Historic Lab Voltage Slide Wire Potentiometer K2 Device
LEEDS & NORTHRUP Historic Lab Voltage Slide Wire Potentiometer K2 Device

$180.00

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ORIGINAL Leeds Northrup Wheatstone Bridge 4760  Directions Operating Manual
ORIGINAL Leeds Northrup Wheatstone Bridge 4760 Directions Operating Manual

$15.00

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NEW - Leeds & Northrup 074409 Analog Output Card
NEW - Leeds & Northrup 074409 Analog Output Card

$59.00

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Leeds & Northrup Electrical Instruments for Measuring – Testing – Calibrating
Leeds & Northrup Electrical Instruments for Measuring – Testing – Calibrating

$70.00

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LEEDS & NORTHRUP 137111 NSMP
LEEDS & NORTHRUP 137111 NSMP

$138.00

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VINTAGE LEEDS & NORTHRUP  RESISTANCE STANDARD  FREE SHIPPING
VINTAGE LEEDS & NORTHRUP RESISTANCE STANDARD FREE SHIPPING

$68.00

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LEEDS & NORTHRUP  4385     FREE SHIPPING
LEEDS & NORTHRUP 4385 FREE SHIPPING

$90.00

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Leeds & Northrup Precision STANDARD Resistor 1 Ohm in original box circa 1963
Leeds & Northrup Precision STANDARD Resistor 1 Ohm in original box circa 1963

$1999.99

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LEEDS&NORTHRUP 650133 UNMP
LEEDS&NORTHRUP 650133 UNMP

$23.00

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Antique LEEDS NORTHRUP Telegraph 3 Bank Tester Resistor Resistance Box
Antique LEEDS NORTHRUP Telegraph 3 Bank Tester Resistor Resistance Box

$150.00

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LEEDS&NORTHRUP 653165 UNMP
LEEDS&NORTHRUP 653165 UNMP

$109.00

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Leeds & Northrup 150051 Temperature Controller
Leeds & Northrup 150051 Temperature Controller

$213.18

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Leeds Northrup 430 177518 Speedomax Recorder
Leeds Northrup 430 177518 Speedomax Recorder

$300.02

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NEW - Leeds & Northrup PC Control Board 074417
NEW - Leeds & Northrup PC Control Board 074417

$269.10

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Leeds & Northrup Shunt Box 4385
Leeds & Northrup Shunt Box 4385

$59.98

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Leeds & Northrup P-ND4B - Series 49 Parts catalog
Leeds & Northrup P-ND4B - Series 49 Parts catalog

$35.00

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LEEDS NORTHRUP 117481 UNMP
LEEDS NORTHRUP 117481 UNMP

$47.00

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LEEDS&NORTHRUP 651027 10-50MV UNMP
LEEDS&NORTHRUP 651027 10-50MV UNMP

$93.00

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LEEDS & NORTHRUP 316569 NSNP
LEEDS & NORTHRUP 316569 NSNP

$18.00

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LEEDS NORTHRUP 063303 REV. D1 UNMP
LEEDS NORTHRUP 063303 REV. D1 UNMP

$95.00

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Kelvin Bridge Ohmmeter 0.0001 ohms to 26.6 ohms - Leeds & Northrup Model No 4286
Kelvin Bridge Ohmmeter 0.0001 ohms to 26.6 ohms - Leeds & Northrup Model No 4286

$90.99

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LEEDS&NORTHRUP 017803 NSNP
LEEDS&NORTHRUP 017803 NSNP

$114.00

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Vintage Leeds & Northrup Potentiometer
Vintage Leeds & Northrup Potentiometer

$40.00

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Leeds & Northrup 177131 - 8692 Directions
Leeds & Northrup 177131 - 8692 Directions

$35.00

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Leeds & Northrup 4390 Potentiometer Current Shunt Std (Serial # 1182030)
Leeds & Northrup 4390 Potentiometer Current Shunt Std (Serial # 1182030)

$249.99

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LEEDS & NORTHRUP 445932 REV. AA NSNP
LEEDS & NORTHRUP 445932 REV. AA NSNP

$274.00

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Leeds + Northrup 046276 Rev. E/E1  Analyzer Power Module
Leeds + Northrup 046276 Rev. E/E1 Analyzer Power Module

$340.00

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Leeds Northrup 4905-1-44-088-20-000 Conductivity Cell
Leeds Northrup 4905-1-44-088-20-000 Conductivity Cell

$195.60

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Leeds & Northrup 4750 Decade Resistance Box .01 to 9,999.99 ohms - lab tested
Leeds & Northrup 4750 Decade Resistance Box .01 to 9,999.99 ohms - lab tested

$55.00

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Vintage Leeds & Northrup Laboratory Wheatstone Bridge Resistance Decade Box
Vintage Leeds & Northrup Laboratory Wheatstone Bridge Resistance Decade Box

$59.99

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LEEDS & NORTHRUP 046263 REV. E UNMP
LEEDS & NORTHRUP 046263 REV. E UNMP

$249.00

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LEEDS&NORTHRUP 4973-10-305-7-000 UNMP
LEEDS&NORTHRUP 4973-10-305-7-000 UNMP

$380.00

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LEEDS&NORTHRUP 444383 REV. G NSNP
LEEDS&NORTHRUP 444383 REV. G NSNP

$199.00

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LEEDS & NORTHRUP 444736 REV. D UNMP
LEEDS & NORTHRUP 444736 REV. D UNMP

$165.00

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Vintage Leeds & Northrup ~ Decade Resistor Box ~ #75947
Vintage Leeds & Northrup ~ Decade Resistor Box ~ #75947

$75.00

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LEEDS & NORTHRUP VOLT BOX  750 OHMS/VOLT CAT. 7593 POTENTIOMETER
LEEDS & NORTHRUP VOLT BOX 750 OHMS/VOLT CAT. 7593 POTENTIOMETER

$35.00

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LEEDS NORTHRUP 055719 POWER TRANSFORMER T240139
LEEDS NORTHRUP 055719 POWER TRANSFORMER T240139

$99.99

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Kelvin Bridge Ohmmeter 0.0001 ohms to 26.6 ohms  Leeds & Northrup Model No 4285
Kelvin Bridge Ohmmeter 0.0001 ohms to 26.6 ohms Leeds & Northrup Model No 4285

$100.00

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LEEDS & NORTHRUP 9513B744 NSNP
LEEDS & NORTHRUP 9513B744 NSNP

$140.00

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Vintage Leeds & Northrup Kelvin Bridge 4286 Ohmmeter Precision Type in Oak Case
Vintage Leeds & Northrup Kelvin Bridge 4286 Ohmmeter Precision Type in Oak Case

$40.00

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Leeds & Northrup Type S Test Set resistance bridge. Partially tested.
Leeds & Northrup Type S Test Set resistance bridge. Partially tested.

$24.95

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LEEDS&NORTHRUP 030200 REV. A1 UNMP
LEEDS&NORTHRUP 030200 REV. A1 UNMP

$201.00

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Vintage Leeds & Northrup Precision Calibration Oil Resistor Standard 100 Ohm
Vintage Leeds & Northrup Precision Calibration Oil Resistor Standard 100 Ohm

$63.99

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LEEDS&NORTHRUP 064319 UNMP
LEEDS&NORTHRUP 064319 UNMP

$158.00

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LEEDS&NORTHRUP 056521 120VAC UNMP
LEEDS&NORTHRUP 056521 120VAC UNMP

$126.00

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LEEDS&NORTHRUP 064305 REV. A1 UNMP
LEEDS&NORTHRUP 064305 REV. A1 UNMP

$242.00

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LEEDS & NORTHRUP 445846 NSNP
LEEDS & NORTHRUP 445846 NSNP

$29.00

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Leeds Northrup 8686 Millivolt Potentiometer
Leeds Northrup 8686 Millivolt Potentiometer

$52.15

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Vintage Leeds & Northrup Potentiometer Coil Scientific Part Brass Base
Vintage Leeds & Northrup Potentiometer Coil Scientific Part Brass Base

$85.00

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leeds northrup potentiometer
leeds northrup potentiometer

$46.90

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Leeds & Northrup Wheatstone Bridge Type S Test Set 5300 - Vintage and Gorgeous
Leeds & Northrup Wheatstone Bridge Type S Test Set 5300 - Vintage and Gorgeous

$179.49

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leeds Northrup vintage electronics
leeds Northrup vintage electronics

$75.00

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LEEDS & NORTHRUP 046268 UNMP
LEEDS & NORTHRUP 046268 UNMP

$114.00

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VTG Leeds & Northrup 0.1 OHM resistor resistance lab standard calibration 4221
VTG Leeds & Northrup 0.1 OHM resistor resistance lab standard calibration 4221

$99.99

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LEEDS & NORTHRUP 4908-50-33-333-20-02-206 NSNP
LEEDS & NORTHRUP 4908-50-33-333-20-02-206 NSNP

$104.00

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Leeds & Northrup 100 Ohms Standard Resistor
Leeds & Northrup 100 Ohms Standard Resistor

$89.99

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LEEDS&NORTHRUP 099012 120V NSNP
LEEDS&NORTHRUP 099012 120V NSNP

$38.00

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Historic Leeds & Northrup L&N Type “S” Test Instrument Wooden Case
Historic Leeds & Northrup L&N Type “S” Test Instrument Wooden Case

$85.00

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Leeds & Northrup KS 9470 Null Voltage Test Set M3012
Leeds & Northrup KS 9470 Null Voltage Test Set M3012

$89.00

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leeds northrup potentiometer
leeds northrup potentiometer

$99.99

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LEEDS&NORTHRUP 064323 UNMP
LEEDS&NORTHRUP 064323 UNMP

$490.00

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Vintage LARGE LEEDS & NORTHRUP 1325745 RESISTANCE FRANKENSTEIN LAB SCI-FI PROP
Vintage LARGE LEEDS & NORTHRUP 1325745 RESISTANCE FRANKENSTEIN LAB SCI-FI PROP

$299.00

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Vintage #89561  Leeds & Northrup Co. Potentiometer Millivolt Thermo-Couple Box..
Vintage #89561 Leeds & Northrup Co. Potentiometer Millivolt Thermo-Couple Box..

$37.05

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LEEDS & NORTHRUP 074411 NSNP
LEEDS & NORTHRUP 074411 NSNP

$196.00

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LEEDS & NORTHRUP 1081-123 NSNP
LEEDS & NORTHRUP 1081-123 NSNP

$195.00

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LEEDS & NORTHRUP 4905-01-33-088-7 UNMP
LEEDS & NORTHRUP 4905-01-33-088-7 UNMP

$155.00

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Antique 21" x 5" Wheatstone Bridge Slide Wire Mfg. By Leeds & Northrup Co.
Antique 21" x 5" Wheatstone Bridge Slide Wire Mfg. By Leeds & Northrup Co.

$34.95

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Vintage WWII Era Workers Badge Leeds & Northrup CO. Philadelphia Pinback Button
Vintage WWII Era Workers Badge Leeds & Northrup CO. Philadelphia Pinback Button

$59.99

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LEEDS & NORTHRUP CONDUCTIVITY CELL WITH TEMP COMPENSATOR  4801-001-03-22-113
LEEDS & NORTHRUP CONDUCTIVITY CELL WITH TEMP COMPENSATOR 4801-001-03-22-113

$58.49

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VINTAGE LEEDS & NORTHRUP POTENTIOMETER SCIENTIFIC TESTING INSTRUMENT/METER
VINTAGE LEEDS & NORTHRUP POTENTIOMETER SCIENTIFIC TESTING INSTRUMENT/METER

$99.95

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LEEDS & NORTHRUP 063981 REV. B UNMP
LEEDS & NORTHRUP 063981 REV. B UNMP

$319.00

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LEEDS & NORTHRUP 028291 SPRING NSNP
LEEDS & NORTHRUP 028291 SPRING NSNP

$7.00

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LEEDS & NORTHRUP 4905-10-33-088-20 UNMP
LEEDS & NORTHRUP 4905-10-33-088-20 UNMP

$115.00

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LEEDS & NORTHRUP VOLT BOX CAT 7592 750 OHMS/VOLT POTENTIOMETER
LEEDS & NORTHRUP VOLT BOX CAT 7592 750 OHMS/VOLT POTENTIOMETER

$40.00

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Leeds Northrup R-820-1-1 Amplifier Module
Leeds Northrup R-820-1-1 Amplifier Module

$174.57

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LEEDS&NORTHRUP 7678 NSNP
LEEDS&NORTHRUP 7678 NSNP

$926.00

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Leeds Northrup 4908-01-44-091-20-02 Conductivity Cell W/ Temp Comp
Leeds Northrup 4908-01-44-091-20-02 Conductivity Cell W/ Temp Comp

$48.65

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LEEDS NORTHRUP Circuit Board PCA Amplifier 055867 REV H
LEEDS NORTHRUP Circuit Board PCA Amplifier 055867 REV H

$99.00

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LEEDS & NORTHRUP VOLT BOX Potentiometer  Made in USA
LEEDS & NORTHRUP VOLT BOX Potentiometer Made in USA

$69.00

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LEEDS & NORTHRUP 4300 Adjustable Resistance Standard Power Meter, Vintage!!
LEEDS & NORTHRUP 4300 Adjustable Resistance Standard Power Meter, Vintage!!

$750.00

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Leeds & Northrup RESISTANCE THERMOMETER BRIDGE MODEL 8064
Leeds & Northrup RESISTANCE THERMOMETER BRIDGE MODEL 8064

$35.00

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Leeds & Northrup 4020-B 1 OHM Standard Resistor 1694461
Leeds & Northrup 4020-B 1 OHM Standard Resistor 1694461

$115.99

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LEEDS & NORTHRUP 085104 FILTER NSNP
LEEDS & NORTHRUP 085104 FILTER NSNP

$24.00

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Leeds Northrup testing meter.   vintage wood cabinet. U.S. Navy Contract. ...
Leeds Northrup testing meter. vintage wood cabinet. U.S. Navy Contract. ...

$40.00

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Leeds & Northrup Specific Conductance Micromhos SEE PICS!
Leeds & Northrup Specific Conductance Micromhos SEE PICS!

$19.99

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Antique Leeds & Northrup Co Possibly Potentiometer Galvanometer
Antique Leeds & Northrup Co Possibly Potentiometer Galvanometer

$129.99

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NEW Leeds & Northrup 074409 Analog Output Card Rev C
NEW Leeds & Northrup 074409 Analog Output Card Rev C

$70.20

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Antique Macbeth Illuminometer Leeds Northrup Weston 267 Meter + Parts
Antique Macbeth Illuminometer Leeds Northrup Weston 267 Meter + Parts

$59.99

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Leeds Northrup 074417 Pcb Circuit Board Rev E/f
Leeds Northrup 074417 Pcb Circuit Board Rev E/f

$173.10

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Leeds & Northrup Model: 4261 Students Kohlrausch Slide Wire
Leeds & Northrup Model: 4261 Students Kohlrausch Slide Wire

$39.00

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Leeds & Northrup Large 3-Way Switch, Black Bakelite
Leeds & Northrup Large 3-Way Switch, Black Bakelite

$35.00

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LEEDS & NORTHRUP 9912 RUN-UP BOX
LEEDS & NORTHRUP 9912 RUN-UP BOX

$32.99

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Vintage June 1941 Leeds & Northrup Employees Handbook Philadelphia 87 Pages
Vintage June 1941 Leeds & Northrup Employees Handbook Philadelphia 87 Pages

$22.50

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Leeds & Northrup 9919 With Extras
Leeds & Northrup 9919 With Extras

$59.99

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LEEDS&NORTHRUP MDR 1759 2390 445100 CIRCUIT BOARD
LEEDS&NORTHRUP MDR 1759 2390 445100 CIRCUIT BOARD

$99.99

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Leeds & Northrup Antique Vintage Resistance Standards 10.01 Ohm 8070-B
Leeds & Northrup Antique Vintage Resistance Standards 10.01 Ohm 8070-B

$59.99

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