The Hantek HT307 is designed for probing difficult to reach signals which are protected by insulation.
Acupuncture probes can be fixed to the end of a standard Multimeter lead.
When it is necessary to probe signals in a cable loom, the acupuncture probe can be used. The probe is used by piercing the cable's insulation with its needle-like tip until the conductor is reached. The minute hole created in the insulation will normally close up, offering continued protection of the conductor. This makes it suitable for automotive applications.