| 摘要 |
PURPOSE:To avoid the read-in mistake by interlocking the scale display and the range selection. CONSTITUTION:The scale plates 1 of many types which provide the scale 2 on the front and the pins 3 to 5,3,4,5 corresponding to the range of content of the scale 2 at the rear, are prepared and the pin board 21 having holes of a given number is prepared, and the contact of hole is respectively connected to the decoder 22 connected to the range selector. Thus, when the scale plate 1 having the pins 3 to 5 is fitted to the pin board 21, the contacts for three holes are closed, and the decoder 22 receiving the closed contacts signal feeds the signal indicating the specified range to the range selector 23, the range selector 23 feeds the signal selecting the range to the specified range corresponding to the scale of the scale plate 1 to select the range to a given value. Accordingly, the content of scale and the range are always in agreement without fail to achieve the desired objective. |
