UPDATE: This is a new version of the model, with a slimmer base for even better visibility.

One of the most common complaints about the Gen 1 TSO Parallel Guide system is that the metal cursor makes accurate setting of the cursor very difficult. 

This aims to resolve this issue by providing a sloped cursor that makes contact with the ruler to negate the parallax as much as possible.

Depending on your printer and settings, you may need to do some light standing for the best fit possible, I have tried to make this in a way to minimize that.

The through hole that is used to attach it to the TSO stop block has been expanded for some extra adjustability.