Patent ID: 7980127

Claim:
A flow meter, comprising: a transparent holder which includes a housing chamber at a lower side, an inlet and an outlet in the housing chamber, and a flow passage communicating with the inlet and the outlet, the housing chamber also including a first fastening portion, a second fastening portion and a third fastening portion bridged respectively by a first connection rib, a second connection rib, a third connection rib and a fourth connection rib, the transparent holder also including an opening on an upper side communicating with the inlet; a first fastening assembly and a second fastening assembly that include respectively a first fastening member and a second fastening member screwed with the inlet and the outlet to communicate with the flow passage; a butting member running through one end of the flow passage and engaged therewith; a flow scale plate located on the upper side of the transparent holder; and a regulation member coupled with the first fastening member held in the opening above the inlet.