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公开(公告)号：US20220284872A1
公开(公告)日：2022-09-08
申请号：US17803141
申请日：2022-03-03
Applicant: Thomas p. Caragher
Inventor： Thomas p. Caragher
Abstract: An electromagnetic scanning metronome comprises a laser to produce a beam of light, and comprises a surface to reflect the beam of light to produce a visible line of light which extends over an image of sheet music. The metronome includes apparatus to move the laser and visible line of light from left to right with respect to the image of sheet music.
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