Combination rotatable oil dip stick and wiper

作者: Carroll G Smith

DOI:

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摘要: The dip stick gauge of this invention includes a wiper housing at the entranceway fluid tank or reservoir having multiplicity resilient annular rings engageable with being operable to wipe residue from when it is removed reservoir. assembly hollow tubular an opening in one its side walls. A rod disposed and indicia on walls coincident housing. Means provided terminal ends rotate out so that will not be wiped as

参考文章(1)
Swallert Sven Arild, Oil level indicator ,(1965)