AKKTOL BT-607 - Understanding Stroke Gauge; Initial State Gauge Reading; Stroke Check and Working Stroke

(Approx.)
Before
After
Check the video
on youtube
Parameters for Recognizing Stroke Gauge
Fig1
Fig2
1. Initial State
The top of white line should be at 0mm when the handles are closed (Fig 1).
Open the handles, the top of white line is at 6mm( Fig 2), so the working stroke is 6mm,
the nut height will be decreased by 6mm after riveting.
2. Stroke Check
6