Curve Rideline Maker is used to set a rideline on your curve shears.

It has a quick magnetic release to be able to quickly view your rideline without having to remove your shear

It comes with a 1k full round ruby stone. 

To use:

losen the rear angle locking nut and set the j firmly on the ruby stone once set lock the jig in place to achieve optimal ridelines on curve shears. 

To clean the ruby stone use a light mist of wd40. 

WD40 can also be use as a lubricant during the motion of creating or establishing your rideline.