[Bell Historians] Re: Diameters (was Dogmersfield)

George Dawson george at 6MJAReOOj1MuYnw-fu8cyBvVaQU7IoC4IAlHQ-SzdOJF2IukW39wXBs5HOsVSE7VWP8-GPW-HQ1bSlMnzLteYsc20Bjd.yahoo.invalid
Thu Aug 7 16:30:57 BST 2008


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Message Received: Aug 07 2008, 02:45 PM
From: "Chris Pickford" 
To: bellhistorians at yahoogroups.com
Cc: 
Subject: [Bell Historians] Re: Diameters (was Dogmersfield)

We've been here before, I think, but no two people - bellfounders or what the Victorians used to term "Bell hunters" - will measure diameters exactly the same. Even people who are careful and measuring in idea circumstances may vary by up to 1/8" and sometimes more. 

While some bells are elliptical, that's not really a major reason for variations in quoted diameters. It's much more about human error, access, degree of care and (let's not forget it) the accuracy of measuring equipment - minor damage to the end of a steel tape can easily lead to an error of 1/16" or more.

Anyway, all I'm really saying is that while accurate measurement is clearly desirable, there's a practical limit - and it's not worth getting het up about differences of 1/8" or 1/16" 

CP
            
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