Simpson TS113 railroad tester

Model: TS-113 Part Number: 12113 Ordering Number: 1B2421 The Simpson TS-113 Volt-Ohm-Milliammeter Railroad Test Set is a rugged, reliable instrument that has been designed for use by trained and qualified technicians associated with the railroad signaling and communication field.  The following are standard features only for the TS113. Features AC current transformer facilitates minimal voltage drop On time measurement at any rate in excess of 30 pulses per minute An adjustable pointer-stop for observation of peak reading stabilization A current-limiting diode prevents overload damage