Dwell is the duration of crank rotation that the points are closed in degrees. If you set the point gap correctly, you get the proper degrees as it is machined into the points cam. Honda says that this is 195 degrees. Few dwell meters are calibrated to display this number for the SOHC4 and its wasted spark ignition cycle. Dwell meters will have to be calibrated/ or interpreted for the number that it does display.
My calibration technique is to set brand new points to the gap specified, attach the dwell meter and note the indication. Thereafter, you can use the noted reading to adjust used points for the same reading.
Cheers,
