Martin H. Eastburn wrote:

The thousand cubic centimeter is it. cm^3 The liter name itself is not
allowed in metric.

"revolution" isn't SI but allowed to be used with it.
right angle, degree, grad, minute, second. All non SI.
mho, current/circular mil, franklin, faraday, watthour, dyne, watt,
newton, BTU,
therm, megaton TNT (4184 Terajoule) , frigorie, erg, electronvolt, watthour
calorie.
the electronvolt can be used but not SI.
dyne, angstrom, fermi, micron, caliber, point, pica, astronomical unit,
parsec, angstrom, bohr, fermi, lambert, gilbert, oersted maxwell, gauss,
gamma,
bel, neper, bar, rad, Rankine, calorie, c, knot, poise, stokes, liter,
and lambda.

There are many others that were specifically Imperial or American or
British.
Martin H. Eastburn
@ home at Lions' Lair with our computer lionslair at consolidated dot net
TSRA, Life; NRA LOH & Patron Member, Golden Eagle, Patriot's Medal.
NRA Second Amendment Task Force Charter Founder
IHMSA and NRA Metallic Silhouette maker & member.
http://lufkinced.com/


You left out rch units.

John