Parallel cuts without measuring, and Offcuts also! (German video)

[MacBoy]

Using an MFT-type table and track saw, Guido set out to make a simple bookshelf with internal dividers.

To make parallel cuts, he showed a nifty method by referencing the actual rail of the guide track.

Then he amazed me by using the offcuts against the stop block to cut the narrower in-between boards.  Instead, I would’ve been moving the stop block to the narrower position.

I skipped past the introduction (there is no English auto-translation).

Watching at 2x speed was just fine for me.
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[Packard]

He appears to replicate what parallel guides do.  I have the TSO parallel guides which I attach to a pair of squaring arms.  So that is an alternative method.

I used to break down sheet-goods on the track saw and make the kind of cuts shown in the video on the table saw. 

When I got the squaring arm and then the parallel guides, I now cut to final size with the track saw. 

But he seems to have a workable solution for do it yourselfers.