Testo 0554 0990 Telescope Extension
Extends 0554 0960 telescope up to 6.5 feet, for all Testo 440 air velocity probes with an interchangeable handle.
![Testo 0554 0990 Telescope Extension](/assets/0554-0990-360.jpg?width=660&height=495&scale=upscalecanvas&bgcolor=fff)
Overview
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