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Subject:
From:
astronet nagel <[log in to unmask]>
Reply To:
astronet nagel <[log in to unmask]>
Date:
Tue, 18 Dec 2007 20:32:41 +0100
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De schroefdraad, zoals die op Amerikaanse spullen zit (bijv. de schroefdraad
in de bevestigingsringen voor de buis van de Celestron 11);
is dit UNC 1/4" of Whitworth 1/4"? En als het UNC is, is dit dan grof of
fijn?
Arie Nagel


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