First of all as I mentioned, German records that I have do in fact have an exact 300 mm diameter and didn't follow the US rules. Second, I highly doubt anyone in a metric country would make records to 3 decimal places in millimetres.
The records that are made of vinyl/plastic would change with temperature and thus a 3 decimal place accuracy is highly unmanageable. With the tolerances set forth in the spec it is feasible to state the sizes to the nearest whole millimetre and forget the impractical 3 decimal place nonsense. Also preference for 300, 250, and 175 mm would be the preferred sizes if there was ever a return to recordings. Is there any recording standard available from a non-metric source that anyone is aware of? Euric ----- Original Message ----- From: "Brij Bhushan Vij" <[EMAIL PROTECTED]> To: "U.S. Metric Association" <[EMAIL PROTECTED]> Sent: Friday, 2004-01-02 01:04 Subject: [USMA:28096] SOOT - the Unit RE: Phonograph records > Sirs: > The purpose of achieving target for implementation of Metrication shall > remain defeated/deferred till HARD CONVERSION to soft adjustments is NOT > granted OKay, like: 12", 10" and 7" records be considered/advertised 302 mm, > 251 mm and 175 mm respectively although these continue to be 301.625 mm. 10" > is 250.825 mm. 7" is 174.625 mm; for pipelining the NEW manufacturing > process to adopt rationalisation. > Steps in inrement of 1/8th inch is a unit that was called SOOT, in India, > and used where 'inches prevail'. > Yes, much depend on industrial houses to accept promotion of the METRIC > usage. > > Brij Bhushan Vij <[EMAIL PROTECTED]> > 20040102/11:34 AM(IST)
