[modeleng] Re: Unknown thread
- From: Pcx <pierre.courbouleix@xxxxxxxxxx>
- To: modeleng@xxxxxxxxxxxxx
- Date: Thu, 14 Oct 2004 23:23:24 +0200 (CEST)
Thanks Alan, no need to convert to metric as I begin to be fluent in Imperial
units! Thanks to the Listees!
Pierre
> Message du 14/10/04 22:51
> De : "alanjstepney"
> A : modeleng@xxxxxxxxxxxxx
> Copie à :
> Objet : [modeleng] Re: Unknown thread
> Thury threads were a Swiss thread mainly used by clock and watch makers, and
> by extension, by instrument makers.
> Some other countries also adopted them.
> 20 Thury is 0.0189" diameter, (0.479mm), and 208.2 tpi.
> core diameter is 0.0134", and thread depth is 0.030".
> Sorry, but you will have to convert them to metric if that is what you need.
>
> Although the chart I have doesnt say so, I am fairly sure that they were 60
> degree angle,
>
> alan@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
>
> www.alanstepney.info
> Model Engineering, Steam Engine, and Railway technical pages.
>
>
> ----- Original Message -----
> From: "Pcx"
> To:
> Sent: Thursday, October 14, 2004 9:07 PM
> Subject: [modeleng] Re: Unknown thread
>
>
> Hi,
> Recently I found (at an ANTIQUES SALE) an old picture of a scientific
> instrument(optical) and I noticed a thread marked '20-Thury' . Do you know
> what is this type of thread ?
> Regards.
> PIerre
>
> pierre.courbouleix@xxxxxxxxxx
>
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