To the Editor.
—The article by Linfors et al1 was of particular interest to me. The arm circumference of 35 cm was important in their study, and I wondered about the background of this decision. Dr Linfors responded to my letter and referred to several articles that had used this 35-cm circumference as the likeliest to give a false elevation if measured with the standard cuff.In the late 1950s, I had been asked to talk to our local medical society about obesity. The end result was that more than 100 obese patients were referred to me, and I encountered difficulty in getting accurate blood pressures till I used a leg cuff. I decided to order a larger arm cuff and was told by our local medical supplier that none were available, but that the company producing the Tycos sphygmomanometer had agreed to prepare one if I would provide