| 摘要 |
The present disclosure relates to an oil circulation indicating instruments which comprise a housing, a plurality of boreholes angularly disposed within said housing in an upwardly-downwardly direction, said boreholes communicating at their lower end with a common channel disposed in said housing, additional boreholes communicating with each of said angularly disposed boreholes and with the elements to be lubricated, a movable float means disposed in each of said angularly disposed boreholes and adapted to be raised to a point above said additional boreholes or lowered to a point below said additional boreholes, and a central lubricant supply pipe communicating with said common channel for the introduction of the lubricant thereto.
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