The 3505A is the latest version of the OTC 100 Series
Autoranging Automotive Multimeter with many new troubleshooting features.

Features include: resistance, continuity, diode and capacitance tests; rpm and
temperature measurement; millisecond pulse width and peak volts measurements
for fuel injectors; duty cycle and frequency to 10M Hz; dwell measurement; O2
cross counts; relative measurement, can be used for low resistance measurements
to remove test lead resistance from measurement; data recording: min/max for
fluctuating measurements; data hold; and fused direct current measurement up to
10 amps.

The 3505A also includes heavy-duty test leads with removable alligator
clip ends, inductive rpm clamp and temperature probe.