I've spent the better part of the day trying to find the answer to this, so I apologize if my search-fu is weak, but....

Being a seasoned miniature gamer, I'm used to army-scale movement being a particular distance in inches (or centimeters), not a movement template / device. So my question involves moving around a fixed piece of impassible terrain.

For other games (like PP, GW, etc), you typically move a certain number of inches (e.g. 8 inches) and bend the tape measure around a terrain piece, causing the joint in the tape measure to bend around the terrain piece as needed.

For Legion, the joint is fixed based on the movement device. So if a miniature needs to move around a terrain piece (for example, a building with 90 degree corners), but the joint occurs BEFORE the corner, how does the miniature move around the corner? My interpretation of the rule is to raise the movement device above the terrain, and bend it accordingly, and the miniature is placed at the end of the movement device. This would garner it extra distance compared to the "bend the tape measure around the corner rule" as the movement device is actually cutting through (albeit above) the terrain piece.

Thanks for any clarification in advance.

The movement tools are usually a pretty cool mechanic, but they get a bit wonky for things like this.

No, you can't position it over the terrain piece if it's impassible. It has to go around.

Unless it's compulsory, you can take a partial move, or use a shorter tool. But sometimes you just can't get there from here in one move.

To expand on that: the mini is considered to be moving along the path laid out by the template, so the whole path needs to be clear enough for the base/mini to move through. If you hold the template over impassable terrain the mini would have to move through that terrain, which it can’t and would therefore have to stop as soon as its base hits the terrain.

This is described on page 33 under Movement.

for fluffiness you can consider this an effect of how tricky it is to change direction while running full speed.

personally I feel this makes interior movement too hard and so I will likely use grid moment for interiors. (this means using my imperial assault tiles)