| 摘要 |
<p>A bi-metal gauge includes a bi-metal element (112) deflectable on application of heat thereto, a base plate (116) supporting the bi-metal element (112), a pointer carrier (150) rotatable on deflection of the bi-metal element (112), a pointer (160) connected to and rotatable with the pointer carrier (150), and a gauge case including guide means (118,120;126,127) for guiding the base plate (116) substantially in a single direction relative to the pointer carrier (150). The pointer (160) includes a shaft (156) having a bore therein of substantially circular axial cross-section and the pointer carrier comprises a link pin of substantially circular axial cross-section receivable in the bore of the pointer shaft (156) such that the pointer (160) can be fitted to the pointer carrier (150) in any orientation. Calibration includes a first step in which the support member is moved until a link pin (154) of the bi-metal element (112) is a predetermined distance of the axis of rotation of the pointer (160) and a second step in which the pointer (160) is placed in the correct orientation on the pointer carrier (150). <IMAGE></p> |
