The ⚀dec.dot.octa·quadqua·volumel, or ⚀barrel·volume

Quantityvolume
Formal name

⚀dec.dot.octa·quadqua·volumel
⚀decocta·triqua·volumel
⚀septdubqua·hand·volume

Formal abbr⚀d.o•q↑vmℓ
⚀do•t↑vmℓ
Colloquial name⚀barrel·volume
⚀coomb·volume 
Colloquial abbr⚀brl·vm
⚀cmb·vm 
Derivation27=8z ⚀hand·volume
Derivation abbr27=8z ⚀hd·vm
TGM equiv

≈ 4.88z Volm

TGM equiv abbr≈ 4.88z Vm
SI & USC equiv

4387.9z=7447.75d inch3
4.3879z=4.31004050925d foot3
 4126.89177489177d fluid ounce
≈ 
32.241341991342d gallon
= 122.046755906d liter

scaling01:06:+:04:A.8000