[Add Delete Multiple GIF]
- Tap on "History" at the bottom of the screen
- Tap and hold on the first measurement you want to delete until it is highlighted
- Tap on all other measures you want to delete
- Tap on the rubbish can in the top left corner
- Tap on "Delete" in the dialog box that pops up
Once the first item is selected you can also click on the three vertical dot menu next to the rubbish can and select "delete all".
TO NOTE: Both these options are permanent, no measurement deleted in this manner will be able to be recovered.