Left middle — ether (ākāśa)
Anatomical-left hand
The anatomical-left middle finger mirrors the ether locus. The point supports visual comparison of the two hand insets and should not be read as a classical measurement.
Point 8 of 10 in Mudrās — Hand Element Circuits (मुद्रा)
Cross-tradition overlaps
No overlapping points are registered for this point.
Sources
Vasant Lad, Ayurveda: The Science of Self-Healing (secondary)
Hand-mudrā section, five-element finger correspondence; middle finger is assigned to ether/space in the convention used here.
Kularṇava Tantra (primary)
Chapter 17, mudrā teaching and ritual hand gestures.