Date: Sun, 20 Nov 2011 02:53:46 -0500 From: Leo Piilonen Subject: Re: WBS 1.3.6-40 for RPC electronics Dear Gerard: I went to the Belle detector again today and made some measurements of the BKLM crate positions, which I have superimposed on the side view of the magnetic field map that I had sent you many months ago. In short, these crates are in the "dark blue" region with a field of between 0 and 5 gauss. They ride above the iron surface because they are mounted in racks (not shown). I didn't mark them on this figure and I didn't get on top of the endcap yoke to make measurements, but the endcap crates ride on the endcap yoke on the left side of the 36-cm wide iron bulkhead, in the greenish-yellowish field (up to 80 gauss).