| 摘要 |
<p>PURPOSE:To automatically execute marking-off, for example, on cutting positions of a steel sheet, etc., by using an abrasive writing tool. CONSTITUTION:An abrasive writing tool 16 is fitted freely slidably in an almost vertical writing tool fitting groove 2 of a jig 1, the writing tool 16 is received with an openable and closable receiving tool 18, the jig 1 is descended onto a writing surface and at the same time, the receiving tool 18 is opened, further moved horizontally and marking is executed, after marking, the jig 1 is ascended, the receiving tool 18 is closed, fixing the writing tool 16 with a pressing tool 30 is released and the writing tool 16 is dropped onto the receiving tool 18 with gravity only by the amt. of abrasion.</p> |
