HOLDER

PROBLEM TO BE SOLVED: To provide a holder which can fix object to the specified position simply through a strong magnetical attraction and can simply take out the object through disengagement of the magnetic attraction force. SOLUTION: A holder includes a magnetic force generating yoke part 22 in plane form of such an arrangement that magnets 28a-28e and magnetic bodies 32a-32f are adjoiningly installed alternately. A slide plate 34 is equipped with a first 40 and a second sliding yoke 48 and installed on the yoke part 22 slidably. The first sliding yoke 40 is formed so that magnetic bodies 44a-44f and non-magnetic bodies 46a-46e are adjoiningly installed alternately, while the second sliding yoke 48 is formed from magnetic body in plane form. Over the yoke part 22, a fixing plate 54 is installed with the slide plate 34 interposed, and is furnished with a stationary yoke 60 in a position mating with the yoke part 22. The slide plate 34 is slid so that the first 40 and second sliding yokes 48 are selectively positioned on the yoke part 22 opposingly.