Parallel-Series Circuits

Below we see a good Universal Ammeter being tested. External Ammeter and Current Source are part of test setup. External Ammeter always reads correct.
External Ammeter always reads correct। Note that External Ammeter does not always agree with Universal Ammeter shown below. Determine which Universal Ammeter component has failed. Is it R1, R2, R3, 2 ma switch, 10 ma switch, 100 ma switch or Meter Movement.Answer: Meter मोवेमेंट