--- In dmcnews@xxxxxxxxxxx, Jim Strickland <ihaveanaccount@xxxx> wrote: > what does dwell measure? Dwell meters are originally intended to measure the amount (actually degrees of rotation out of 360 of the distributor shaft) that the points in a point-type of ignition are closed. This has kind of gone away with electronic ignitions. Many folks still have the meters laying around, they can be used to measure the "dwell" of the frequency valve as noted. The measurement number in this is not very meaningful, just an indication of working or not working. Dave