I use a 36" Woodpecker Woodworking Rule and Rule Stop to set the cut length on my after-market parallel rip guides and MFT flag stop.
1. Set the cut length on the woodworking rule with the rule stop.
2. Slide the ruler upside down underneath the guide rail along the length of the Incra T-track rip guide. The rule stop should catch on the guide rail clear splinter strip. The other end of the rule is used to set the rip guide length stop on the Incra T-track.
3. Move the rip guide stop on the Incra T-track until it touches the end of the woodworking rule. Do this for both rip guides.
Even though there are scales on the Incra track, this method ensures that both rip guides are set exactly the same. The same technique works for the flag stop on the MFT fence.
1. Set the cut length on the woodworking rule with the rule stop.
2. Slide the ruler upside down underneath the guide rail along the length of the Incra T-track rip guide. The rule stop should catch on the guide rail clear splinter strip. The other end of the rule is used to set the rip guide length stop on the Incra T-track.
3. Move the rip guide stop on the Incra T-track until it touches the end of the woodworking rule. Do this for both rip guides.
Even though there are scales on the Incra track, this method ensures that both rip guides are set exactly the same. The same technique works for the flag stop on the MFT fence.