Waywiser \Way"wis`er\, n. [Cf. G. wegweiser a waymark, a guide;
weg way + weisen to show, direct.]
An instrument for measuring the distance which one has
traveled on the road; an odometer, pedometer, or
perambulator.
[1913 Webster]
The waywiser to a coach, exactly measuring the miles,
and showing them by an index. --Evelyn.
[1913 Webster]