ProcMeter will show the percentage of attempts a weapon, spell, item, or anything else procs.

This is based off of Bethlhogg's ProcMeter. This one came to life because Bethlhogg's didn't work under the 2.4 combat log.

It's a little different than Bethlhogg's ProcMeter in that it will not track hit, miss and crit percentages but only procs percentages. It can be very specific in what causes the proc. For example it can watch for procs that require specific spells to cause a proc (ex. Quick Shots) or any type of hit, heal, miss, crit, and even specific events (ex. SPELL_PERIODIC_DAMAGE) from you or your pet.

This will overwrite Bethlhogg's ProcMeter if it was previously installed. If that is the case you will need to clear the ProcMeter database (/pm clear).

There are more details of how it works in the Readme.txt