Aerofab Probes, cables and reference standards 4594 Aerofab Probes, cables and reference standards Print 4594 Aerofab Probes, cables and reference standards Probe, cables and reference standards are available in a variety of sizes, lengths and frequencies. Cables: Precise the type of instrument, connector type and desired length. Hole probes: Specify the type of instrument, diamter, length and frequency. Pencil probes: Precise the type of instrument, sensor diameter, length, drop length, type of handle, frequency and type of connector. Reference standards: Specify the type of material, hole size and notch type. Request for information