Patent ID: 7574815

Claim:
A wheeled distance measuring device comprising: a longitudinal pole including a lower portion, a housing attached to said lower portion of said pole, and including a chamber formed therein, and including an extension extended therefrom, a counter attached to said housing and including a spindle having a first end extended out of said housing, and including a first gear member and a second gear member selectively provided on said first end of said spindle, said first gear member including a diameter smaller than that of said second gear member, a wheel including a wheel axle rotatably attached to said extension of said housing, a carrier adjustably attached to said housing and movable or adjustable up and down relative to said housing, a gear element rotatably attached to said carrier with a pivot shaft for selectively engaging with either said first gear member or said second gear member when said carrier is adjusted relative to said housing, and a gear coupling mechanism coupled between said wheel axle and said gear element for allowing said gear element to be rotated and driven by said wheel axle to selectively rotate either said first gear member or said second gear member.