• Calibration Services for NA Instruments

WE DO NOT SELL THE EQUIPMENT LISTED. Our company carries out repairs and calibrations for NAI Instruments.


  • * Since 1964 E.S.R.S. Inc. has been repairing and calibrating test equipment.
  • * We specialize in items manufactured by North Atlantic Industries
  • * Over half a century we have never sold, rented, or bought second hand instruments and we don't do that now.
  • * In that time we have not subcontracted repairs to any third party
  • * We are constantly sourcing New Old Stock of spare parts for these instruments.
  • * Our service will save you almost 50% on the repair costs and about four times quicker than the O.E.M on returns

We are experts in calibrating the following NA Instruments:

NA 2240 Phase/Angle Voltmeter calibration


NA 2250

North Atlantic
Model: 2250
Description: Phase/Angle Voltmeter
Calibration: 5 to 7 business days
Repairs: 4 to 5 weeks

NA 2251 Digital Analyzing Phase Angle Voltmeter


NA 2251

North Atlantic
Model: 2251
Description: Digital Analyzing Phase Angle Voltmeter
Calibration: 5 to 7 business days
Repairs: 4 to 5 weeks

NA 5310 Programmable Synchro/Resolver Simulator

NA 5310

North Atlantic
Model: 5310
Description: Programmable Synchro/Resolver Simulator
Calibration: 5 to 7 business days
Repairs: 4 to 5 weeks

NA 5310 F-2-1 Programmable Synchro/Resolver Simulator

NA 5310 F-2-1

North Atlantic
Model: 5310 F-2-1
Description: Programmable Synchro/Resolver Simulator
Calibration: 5 to 7 business days
Repairs: 4 to 5 weeks

NA 8300 Programmable Angle Position Indicator


NA 8300

North Atlantic
Model: 8300
Description: Programmable Angle Position Indicator
Calibration: 5 to 7 business days
Repairs: 4 to 5 weeks

NA 8300 02-7Angle Position Indicator


NA 8300 02-7

North Atlantic
Model: 8300 02-7
Description: Angle Position Indicator
Calibration: 5 to 7 business days
Repairs: 4 to 5 weeks

NA 8800 Angle Position Indicator

NA 8800

North Atlantic
Model: 8800
Description: Angle Position Indicator
Calibration: 5 to 7 business days
Repairs: 4 to 5 weeks

NA 8800 06 Angle Position Indicator

NA 8800 06

North Atlantic
Model: 8800 06
Description: Angle Position Indicator
Calibration: 5 to 7 business days
Repairs: 4 to 5 weeks


NA 8810 02Angle Position Indicator GPIB




NA 8810 02

North Atlantic
Model: 8810 02
Description: Angle Position Indicator GPIB
Calibration: 5 to 7 business days
Repairs: 4 to 5 weeks

NA 8810 F12 Angle Position Indicator GPIB


NA 8810 F12

North Atlantic
Model: 8810 F12
Description: Angle Position Indicator
Calibration: 5 to 7 business days
Repairs: 4 to 5 weeks

NA 214 C Phase Angle Voltmeter




NA 214C

North Atlantic
Model: 214C
Description: Phase/Angle Voltmeter
Calibration: 5 to 7 business days
Repairs: 4 to 5 weeks

NA 530 Synchro Resolver


NA 530

North Atlantic
Model: 530
Description: Synchro Resolver / Simulator
Calibration: 5 to 7 business days
Repairs: 4 to 5 weeks

NA 530-20 Wideband Synchro Resolver


NA 530-20

North Atlantic
Model: 530-20
Description: Wideband Synchro / Resolver
Calibration: 5 to 7 business days
Repairs: 4 to 5 weeks

NA 540 Synchro Resolver Bridge


NA 540

North Atlantic
Model: 540
Description: Synchro Resolver Bridge
Calibration: 5 to 7 business days
Repairs: 4 to 5 weeks

NA 540-10 Synchro Resolver Bridge


NA 540-10

North Atlantic
Model: 540-10
Description: Synchro Resolver Bridge
Calibration: 5 to 7 business days
Repairs: 4 to 5 weeks

NA 540-20 Synchro Revolver Bridge


NA 540-20

North Atlantic
Model: 540-20
Description: Synchro Resolver Bridge
Calibration: 5 to 7 business days
Repairs: 4 to 5 weeks

NA 212 C Phase Angle Voltmeter




NA 212C

North Atlantic
Model: 212C
Description: Phase/Angle Voltmeter
Calibration: 5 to 7 business days
Repairs: 4 to 5 weeks

NA  213C Phase Angle Voltmeter




NA 213C

North Atlantic
Model: 213C
Description: Phase/Angle Voltmeter
Calibration: 5 to 7 business days
Repairs: 4 to 5 weeks