When did the Jedi start using devices to measure Force sensitivity?
Is it during the Ruusan era?
__________________ RealistRacism: "Sheevites, much like the Banites, were meant to increase in power with each member. From Lightsnake to Gideon to Azronger, this was supposed to be the case. However, knowledge must've been lost in some kind of Gravid-like incident, as Az turned out to be a mid-tier debater with a sub-par track record, sh!itting all over Tempest's legacy. Sad."
They are angry because they have been forced to recognize that their hour has arrived; that the time has come to surrender power to Shimrra and the new order."
For serious though. The electronical device called Force Detector was first used by Palpatine actually, then there were lots of them, one of them was used by Luke when he was beginning to build his New Jedi Order. Given the crystals fueling Force Detector came from Mimban, and Mimban arose to the galactic eyes only in the time of RotE and them the Rebellion era, I highly doubt it happened before that.
However, if you mean the blood tests, they were already around at Bane's times.
__________________
They are angry because they have been forced to recognize that their hour has arrived; that the time has come to surrender power to Shimrra and the new order."
__________________ RealistRacism: "Sheevites, much like the Banites, were meant to increase in power with each member. From Lightsnake to Gideon to Azronger, this was supposed to be the case. However, knowledge must've been lost in some kind of Gravid-like incident, as Az turned out to be a mid-tier debater with a sub-par track record, sh!itting all over Tempest's legacy. Sad."