About Spearfishing utility
All spearfishermen eventually when they become experts, personalize their equipment, one of the first things to customize are the slings, seeking for a solution that will give better performances.
-Calculate sling length from barrel length, head width, wishbone length and enlogation factor.
-Get information about number of pump strokes and pressure for major air guns (Omer, Cressi, Mares,...)
KW
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