—————————————————————————————+——————————————————————+————————————— Time of delay. | Color. |Size of Fuse. —————————————————————————————+——————————————————————+————————————— MK I 2-100| White head. | Short. | | M II (non delay) 2-100| | MK II (non delay) 2-100| White top. | Short. MK II (short delay) 5-100| Black top. | Short. M II (long delay) 15-100| Black head. | Short. MK III (Supersensitive) zero| No color. | Long. | | | | | | MK IV (non-delay) 2-100| White top. | Short. MK IV (short delay) 5-100| Black top. | Short. MK IV (long delay) 15-100| Black top violet | Short. | detonator socket. | MK V (non-delay) 2-100| White top. | Short. | | MK V (short delay) 5-100| Black top. | Short. | | Mark—VII (non delay) 2-100 | White. | Short Mark VII (long delay) 20-100| Black top with violet| Short | detonator socket | —————————————————————————————+——————————————————————+—————————————