Evolution of the MFI Thorax
First 2 digits of model number indicate the year. The next
symbol indicates ordering according
to the 24 Greek letters:
a, b, g, d, e, z, h, q, i k, l, m, n, x, o, p, r, s,
t, u, f, c, y, w.. To characterize
a thorax, follow the procedures described here and fill out this checklist.
