I measured the angles of the arrows and found:
290
220
270
280
160
110
180
310
140
310
Respectively.
Edit:
310
320
210
330
310
320
I also attempted to do the 'possible horizontal barcode' but didn't get any results. Then again, I haven't tried the known barcode, so it could be my method that is wrong.
Edit: I tried the known barcode and didn't get any results either - my method is bad.