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.
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