Since it apparently wasn't completely clear to some I asked FFG if the restriction on maneuver tool usage was confined to the ship currently on it's Determine Course step. Here is the question and answer.
"Hello, Scott,
In response to your question:
Rules Question:
The Rules Reference Guide on Page 9 under the heading "Premeasuring" states the following. "The maneuver tool can be placed and adjusted freely during the “Determine Course” step of executing a maneuver to assist in determining a course. A ship is not committed to a course until the guide" Is this use of the Maneuver Template specific to the currently activating ship, or can either player during any "Determine Course" step use the Maneuver Template to measure from any of their ships even if that ship is not the ship currently activating?
The maneuver tool can be used to plot the path of the ship that is currently determining its course. It can’t be used to plot paths for other ships at this time. The range ruler, on the other hand, can be used at any time with any components."
Edited by ScottieATF