| 摘要 |
PROBLEM TO BE SOLVED: To provide a bicycle dimension measuring instrument which can easily and quickly measure key dimension of a bicycle.SOLUTION: The bicycle dimension measuring instrument includes: a wheel base measuring member 32 which measures dimension of a frame 2 that supports a front wheel 4 and a rear wheel 5, and is configured to be retractable, being engaged with a front wheel hub 4a and a rear wheel hub 5a, for measuring wheel base WB that is the distance between these hub centers; a hanger drop measuring member 33 which is provided to the measuring member 32 for free rising/falling, being abutted with a bottom bracket 17, and measures a hanger drop HD between a wheel base line WBL and a bottom bracket center c as well as a virtual bottom-hub distance HBf which is a distance between a front wheel hub center and a virtual bottom center c' that is a bottom bracket center projected vertically on the wheel base line; and a frame inclination angle measuring member 34 which is provided to the wheel base measuring member and is inclined parallel to an upright pipe 5 of a frame, for measuring seat angle. |
