It is like when
we look || looking || As when we look
into the driver's cabin of a locomotive: we see
handles
that || which all look
more or less alike.
(
That is
understandable || That's natural, since
they are all
supposed || made
to be
grasped || held with
the ha
nd.)
One || But one is the
crank that can be moved continuously over
(it regulates the opening of an air valve) || valve that can
be regulated by continuous degrees;
the other || another
is the handle of a switch, which has only two
positions in which it is
effective || effective positions, it's either shut or
open; a third is the handle of a brake
lever,
the
more strongly || harder
you pull it the more
strongly the brake is applied; a
fourth, the handle of a pump, works only as long as it is
8
¤ moved back
and forth.