In this video I show how I made telescoping miter gauge fence from aluminium square tubes. I wanted fence, what is compact, but also has ability to extend for longer cuts on my tablesaw.

Part list:
Aluminium square tubes 20mm x 30mm x 2 mm and 25mm x 15mm x 2mm from local store
T-tracks: https://bit.ly/2RKvysQ
Adjustable levers: https://bit.ly/2T3VgKF
Track stop / flip stop: http://s.click.aliexpress.com/e/ciQX6b5Q