Flakiness gauge according to TMH 1 Method B3 (BS 812)
| Minimum Length of Slot | Width of Slot |
| 150,0 mm | 37,5 mm |
| 126,0 mm | 31,5 mm |
| 106,0 mm | 26,5 mm |
| 75,0 mm | 18,75 mm |
| 53,0 mm | 13,25 mm |
| 38,0 mm | 9,5 mm |
| 26,4 mm | 6,7 mm |
| 19,0 mm | 4,75 mm |
| 13,4 mm | 3,35 mm |
Flakiness gauge according to SANS 3001-AG4: 2009
| Minimum Length of Slot | Width of Slot |
| 150,0 mm | 37,5 mm |
| 100,0 mm | 25,0 mm |
| 75,0 mm | 18,7 mm |
| 50,0 mm | 12,5 mm |
| 40,0 mm | 10,0 mm |
| 27,0 mm | 7,0 mm |
| 20,0 mm | 5,0 mm |
| 15,0 mm | 3,5 mm |