крайний левый

USAGE: крайний левый (правый)

If you turn the hexagon so that the 1 angle is at the extreme left, then the 4 will be at the extreme right.

The peak farthest to the left (right) ...

The laser wavelength is indicated by the line on the far left (right) of the figure.

The left-most (or extreme left) two columns show ...

Источник: Русско-английский научно-технический словарь на Gufo.me