Here are the possible solutions for only u s senator with a unit of measure named after him clue
Answer
Clue
Relevancy
garn
Clue
Only U.S. senator with a unit of measure named after him
neko
Clue
Rocker Case who tweeted "If a dude called me a 'cougar' I'd be more likely to kill him bare-handed and shit him out in front of his parents than fuck him"
ampere
Clue
French physicist with a unit named after him
Definition
(French) a unit of electric current strength
balboa
Clue
Explorer who has a monetary unit named after him
Definition
(Spanish) the monetary unit of Panama
fermi
Clue
Physicist with a unit of distance named after him
Definition
in physics, a unit of 10 to power of -15 m
mach
Clue
Austrian physicist Ernst who has a speed unit named after him
Definition
a number relating the speed of a body to the speed of sound