发明名称 Turf gauge for measuring the hardness of a gold green
摘要 The turf gauge includes a housing, a probe assembly which is spring biased within the housing with a probe to penetrate into a green and a scale member to indicate the depth of penetration of the probe. A handle of the turf gauge acts to lock the scale member in place so that a reading can be obtained after withdrawal of the gauge from the green. The construction of the turf gauge permits ready replacement of spacer rings for changing the pre-stress of the spring on the probe assembly.
申请公布号 US4887459(A) 申请公布日期 1989.12.19
申请号 US19880215547 申请日期 1988.07.06
申请人 U.S. GOLF ASSOCIATION 发明人 THOMAS, FRANK
分类号 G01N3/00;G01N3/42 主分类号 G01N3/00
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