Telescopic pole 2

Hold the brown handle, press pink lever and pull green tube. Yellow tube automatically move forward. Release the pink lever for positioning the green and yellow tubes at new position.
The yellow tube moves twice faster than the green tube thanks to gear (in red) and two rack drive.

STEP files of this video:
http://www.mediafire.com/file/f553fwo...
Inventor files of this video:
http://www.mediafire.com/file/pb32vdg...

• #science_technology
• #mechanism
• #linkage
• #telescopic
• #pole