John Crawford (fordtech on ARF) noticed that the scans of the Operator's Manual for the Simpson Model 383A Capacohmeter that were on the net were of the 1956 version. Both his and my 383A, however, did not match the schematic of that version. John bought a paper copy of the 1966 version of the manual which has a schematic that matches our units. He kindly let me scan his original and post it for download in the usual places and here on my site. Click the cover above to download the scan, or use this link.