A few questions about depth gauges (rakers) and raker filing guides have come up recently. I thought I'd take a few pics of a raker gauge and how it's used. Here's what they look like--not much to it. Notice that different chain pitches (.325 or 3/8) take different raker guides. Also, note that there are two different options "Hard" and "Soft" which are short for "Hardwood" and "Softwood."