I once checked a measuring cup and found that it held 234+/-2 g of fresh water, so the systematic error was less than 2%, possibly much less.
How hard did you look before you concluded that ALL cups sold in the US have metric on one side up to 250 ml? How did you determine that "most people" fill a cup to "the 250 mark and not the ouce/cup markings?" How did you determine that one can't buy measuring cups in the U.S. with less than 5% systematic error? FYI, I have 6 measuring cups that don't have "metric up to 250 mL on the other side." I bought all 6 in the U.S. John On Wednesday 18 February 2004 20:55, Chimpsarecute wrote: > 2004-02-18 > > Then I guess you won't be buying any cups. All cups sold in the US have > FFU on one side and metric, up to 250 mL on the other side. The 250 mL > mark is closer tot he rim. Most people who fill the cup will fill it to or > near the 250 mark and not the ounce/cup markings. Thus the 236.6 is in > practical use meaning less and only has value has meaning for those who are > attached to exact conversion factors. The so-called error in practical > terms is non-existent. > > Euric > > > > > ----- Original Message ----- > From: "John S. Ward" <[EMAIL PROTECTED]> > To: "U.S. Metric Association" <[EMAIL PROTECTED]> > Sent: Wednesday, 2004-02-18 22:07 > Subject: [USMA:28773] Re: Kitchen measuring cups > > > I would not buy a measuring product that has a >5% systematic error by > > design. > > > A U.S. cup is about 236.6 ml. > > > > John > > > > On Wednesday 18 February 2004 04:52, Carter, Baron wrote: > > > My wife bought kitchen measuring cups here in Austin the other day. > > > They're labelled: > > > > > > * 1/8 cup 30 ml > > > * 1/4 cup 60 ml > > > * 1/3 cup 80 ml > > > * 1/2 cup 125 ml > > > * 1 cup 250 ml > > > > > > Brand name was Trudeau. > > > > > > Baron Carter
