This was the complete line of Micro engines at the time of their demise in 1979.
The Micron brand had been in production since the mid 1940's in France by
The 10CC/.60CI Micron 4 cylinder made in France in the 70's. This beauty was very expensive even in it's day. The 60 was actually a double twin with 4, 2.5 CC cylinders.
FOUR cylinder 2 stroke double twin model engine RC
'via Blog this'