Abstract: A wheeled distance measuring device has a longitudinal pole, a housing, a wheel, a gear coupling mechanism, and a transmission assembly. The housing is attached to the longitudinal pole and has a fork. The counter is mounted in the housing and has a spindle and a gear mounted on the spindle. The wheel is mounted rotatably on the fork and has an axle and a spur gear mounted on the axle. The gear coupling mechanism is mounted on the fork and has a stem, an upper spur gear, and a lower spur gear engaged with the spur gear on the axle of the wheel. The transmission assembly is mounted on the housing and has multiple gear elements. One of the gear elements is engaged with the gear on the spindle, and another one of the gear elements is engaged with the upper spur gear.

Abstract: A surveyor wheel has an assembling seat, a supporting element, a handle, and two wheels. The assembling seat has a moving direction, an upper surface, a lower surface, and two opposite ends. The upper surface of the assembling seat and the lower surface of the assembling seat are opposite each other. The supporting element is formed on the assembling seat, protrudes downward, and has a supporting end. The handle is formed on the assembling seat. The two wheels are rotatable and are respectively connected to the two opposite ends of the assembling seat. The supporting end of the supporting element is to abut against the ground or a horizontal surface to provide support.

Abstract: A wheeled distance measuring device has a longitudinal pole, a housing, a wheel, a gear coupling mechanism, and a transmission assembly. The housing is attached to the longitudinal pole and has a fork. The counter is mounted in the housing and has a spindle and a gear mounted on the spindle. The wheel is mounted rotatably on the fork and has an axle and a spur gear mounted on the axle. The gear coupling mechanism is mounted on the fork and has a stem, an upper spur gear, and a lower spur gear engaged with the spur gear on the axle of the wheel. The transmission assembly is mounted on the housing and has multiple gear elements. One of the gear elements is engaged with the gear on the spindle, and another one of the gear elements is engaged with the upper spur gear.