Symmetric scales
B♭ Augmented
Two augmented triads interlocked. Repeats every major third - Coltrane liked it.
Notes
How to get there
Alternating minor thirds and semitones.
On your instrument
Tap any note to hear it. ● root ● scale note
Guitar - Standard (EADGBE)
Chords in this scale
This scale skips too many steps to stack tidy thirds - treat any of its notes as colours over the drone instead of building chords.