Abstract

An electronic measuring wheel has a casing, a distance wheel and an operating shaft. The casing has a power supply, a seven-segment display and a sensor. The seven-segment display is mounted in the casing and is electrically connected to the power supply. The sensor is mounted on the seven-segment display in the casing and is electrically connected to the power supply and the seven-segment display. The distance wheel is rotatably connected to the casing and has a distance wheel axle and an induction ring. The distance wheel axle has an inner end mounted in the casing. The induction ring is mounted around the inner end of the distance wheel axle near the sensor. The operating shaft is connected to the casing.

IPC Classes  ?

• G01B 7/04 - Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width, or thickness specially adapted for measuring length or width of objects while moving
• G01B 7/30 - Measuring arrangements characterised by the use of electric or magnetic techniques for measuring angles or tapersMeasuring arrangements characterised by the use of electric or magnetic techniques for testing the alignment of axes
• G01B 5/00 - Measuring arrangements characterised by the use of mechanical techniques

Abstract

A wheeled distance measuring device includes a housing attached to a pole, a counter attached to the housing and having a spindle extended out of the housing, and two gear members of different diameters selectively attached to the spindle, a wheel including a wheel axle attached to the housing, a carrier adjustably attached to the housing, a gear element rotatably attached to the carrier for selectively engaging with either of the gear members, and a gear coupling mechanism coupled between the wheel axle and the gear element for allowing the gear element to be rotated by the wheel axle to rotate either of the gear members and for forming either a metric or a British scale or unit or system.

IPC Classes  ?

• G01B 3/12 - Measuring wheels