JVC GY-HM100U Manual page 14

3)
Unlock the tripod legs and extend them to the height you want for the camera.
Tripod leg with both locks locked, then with both locks unlocked.
4)
Attach the tripod to the dolly.
5)
Level the tripod by using the level and adjusting the leg heights.
Tripod leg seated in dolly.
Tripod level.
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