1. This a fairly basic rule in terms of scales - most of the information relating to the name of the rule is printed on the back.
2. The conversions cover both imperial to metric and also between different imperial units. As in the table below, values are given both for the conversion factor and convenient scale setting to obtain this value.
3. It has a feature also found on the Pickett N902, namely very simple descriptions of how to perform the most important functions.