PURPOSE: To permit tiles to be attached easily, quickly, and exactly to the surface of walls at a given interval of joint without any skill.

CONSTITUTION: Many L-shaped tiles 2a are placed between the projected lines 7 of a pair of standard frameworks 5 having L-shaped cross sectional lines, in which the projected lines 7 are provided at a given interval of joint in the longitudinal direction on the inside and projections 10 are formed likewise on the outside, and each of the formworks 5 is coupled with the corner of both sides of the wall 1. The tiles 2a are attached to the corners 1a and reference ropes 6 are horizontally set between the projections 10. Many flat tiles 2b are attached at a given interval of joint to the surface of the wall 1 between the frameworks 5 along the ropes 6.