Patent ID: 8344903

Claim:
An instrumental device having a display plate having a variable display portion, a pointer moving around the variable display portion, and pointer drive means provided on a back-face side of the display plate for moving the pointer, comprising: a guide rail portion provided in the display plate to surround a periphery of the variable display portion, the pointer being located on the guide rail portion; a holding portion holding the pointer movably along the guide rail portion; a first magnet provided in the pointer or the holding portion; and a second magnet provided in the pointer drive means such that the second magnet is opposite to the first magnet, wherein: the pointer is moved in association with rotation drive of the pointer drive means by attraction force of the first and second magnets, the pointer drive means is formed of an arm member and a stepping motor, the arm member is secured to a rotation shaft of the stepping motor, the second magnet is formed on the arm member, and the second magnet is opposes the first magnet.