Height measurement device

A height measurement device, detachably disposed on an article, comprising:

• a body, comprising:
• a clamping member, having a first joint portion and a clamping slit, wherein the clamping slit is composed of a first side wall, a second side wall and a third side wall, and is configured to clamp the article,
• wherein the first side wall comprises a side wall positioning element disposed thereon, while the height indicator abuts the side wall positioning element, the height indicator is fixed at the measurement position which is perpendicular to the second side wall,
• wherein the height indicator further comprises a first positioning element, and the first side wall further comprising a second positioning element, while the height indicator is perpendicular to the second side wall, the first positioning element correspondingly joints the second positioning element;
• a height indicator, having a first pivot portion;
• and
• a pivot member, having an adjacent portion and a second joint portion, and pivotally jointing the height indicator to the clamping member through the first pivot portion, whereas the pivot member is moved to allow the second joint portion joint to the first joint portion, the adjacent portion abuts the height indicator onto the clamping member so as to fix the height indicator at a measurement position;
• and
• a measurement unit, disposed on the body, for use in measuring a height of the measurement position.