Understanding how to properly read and operate a multimeter is a core skill for anyone working with electrical systems in the fluid power industry. This poster provides a clear, visual reference to the most common multimeter symbols and functions found on digital meters used in field and shop environments.

It includes:

Voltage (AC/DC): How to identify and measure alternating and direct current voltage.
Current (AC/DC): Symbols for measuring current flow through a circuit, both AC and DC.
Resistance & Continuity: Includes the ohm (Ω) symbol for resistance and the continuity buzzer symbol, used to test if a circuit is complete.
Diode Function: Indicates how to check the health and direction of diodes.
COM and Ground Leads: Shows where to connect the black test lead and explains grounding.
Additional Functions: Including temperature, capacitance, frequency (Hz), and duty cycle (%) — all critical for advanced troubleshooting.
Prefix Reference: Quickly decode scale prefixes like milli (m), micro (µ), kilo (k), and mega (M).

This multimeter quick guide is ideal for apprentices, students, or anyone preparing for IFPS certifications like the Connector & Conductor or Mobile Hydraulic Mechanic. Hang it in your shop, lab, or classroom as a constant reminder of safe, accurate electrical testing practices.