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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Why a silver index scale? - Correction
From: Bill Morris
Date: 2016 Mar 27, 10:46 -0700
From: Bill Morris
Date: 2016 Mar 27, 10:46 -0700
<<a brass with 20 percent nickel substituted for the zinc>> should read " a brass in which half the zinc is substituted by nickel, giving an approximate composition of copper 60, zinc 20 and nickel 20."
Bill Morris