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许多精密计量仪器如:万能工具显微镜万能测长仪、齿形齿向检查仪、滚刀检查仪等,在使用过程中其导轨润滑部位对油品性能有很高要求,用普通的机械油,若粘度过低,则易流失,粘度过大又会影响测量精度。目前有些单位采用国产钟油来润滑(有的国产精密仪器说明书也介绍用钟油),但在实际使用中容易使导轨面发暗锈蚀,价格昂贵(一小瓶28克约二元三角),防锈性能较差,一小瓶油几次涂刷就用完了。有的仪器用钟油粘度太大,
Many precision measuring instruments such as: universal tool microscope universal length measuring instrument, toothed profile tester, hob tester, etc., in the course of its rail lubrication parts of the high performance of oil products, with ordinary mechanical oil, If the viscosity is too low, easy to drain, viscosity will affect the measurement accuracy is too large. At present, some units use domestic bell oil to lubricate (some domestic precision instrument manuals also introduce bell oil), but in actual use it is easy to make the guide rail surface dark rust, expensive (a small bottle of about 28 grams of binary triangle), anti Poor performance of rust, a few bottles of oil on a few brushing run out. Some instruments with too viscous oil,