The real deal, 1960s/70s cyclometer (or mileometer if you like), we have all variants for 20", 24", 26", 26 x 1 1/4" or 27" wheels.
Easy to fit, these work by tracking each revolution of the wheel. They work accurately when used with the wheel size specified, but they'll also work relatively accurately when used with a close matching size ie: 26 x 1 1/4" cyclometer with a 26 x 1 3/8" wheel, or 27" cyclometer with a 700c wheel. The readouts will not be completely accurate but if you're not taking it too seriously then it's a decent work-around when you need that authentic old-school mileometer.
Everything is included, and instructions are printed on the inside of the box.
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