Handheld Depth Finder Operation Manual (P/N: DF2120PX ) NMP Support Center November 30, 2011 01:20 Follow Click on the link below: DF2120PX[1].pdf 100 KB Download Related articles DT1H ~ DepthTrax® 1H Handheld Depth Finder The DF2120PX op manual refers to "lubricate the switch" in several places, but doesn't tell how. How do I lubricate the switch? Comments 0 comments Article is closed for comments.
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