To improve working efficiency by arranging a service core 3 at an arbitrary position along the outer peripheral side of a top board of a table.
A plurality of support posts 6 whose base ends are fixed on the undersurface of a top board 2 of the table are stood along an outer peripheral edge 2a of the top board 2 of the table and at appropriate intervals and on the outside of the outer peripheral edge 2a (outside of the radius) by plane view. A receiving tool 7 with a circular arc-shape and a guide rail-shape by plane view is connected with between top ends of these plurality of the support posts 6. On a plane part 7c of the receiving tool 7, mounting parts such as fitting holes 8 are provided at appropriate intervals in the longitudinal direction and the shelf board-shape service core 3 is fitted on an arbitrary position in the circumferential direction of this receiving tool 7.
TASAKA TOMOHIKO
HOSOE ISAO
ITOKI KK