Press the differential towards the transmission cover at the crown wheel adjusting tool and read off the backlash on the dial gauge.

将差速器向盆形齿轮调整工具处的变速器盖方向压，然后读取百分表上的间隙值。

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Is the transparent cover on the watch, we see the dial, read the time, there is a table can prevent dust, water vapor and other damage caused by the watch.

就是手表上那个透明盖子，通过它我们看到表盘，读取时间，还有表蒙可以防止灰尘、水气等对手表内部造成损害。

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