Small adjustable dowel cutting jig

Adjustable jig to be able to cut small dowels off at a certain length. Specific to my razor cutter that has a 6.5mm offset to center and done in 10mm increments. Using it for regular and beefy bamboo skewers. Expecting I can use a version of this as a story pole of sorts to create struts for geodesic domes. Like this one http://www.thingiverse.com/thing:317677