Tape measure reads the diameter at 2-1/2" (63.5mm); body 5-7/16" (138.1mm) long; and 6-3/4" (171.45mm) from bottom to end of the fuze assembly.
At 1:32, that's 0.078125" (1.98mm) diameter; and 0.1699" (4.31mm) long.
At 1:35 that's 0.0714" (1.81mm) diameter; and 0.15535" (3.94mm) long
Note that there are LE (and AirSoft) smoke grenades that use a 30 x 125mm body (≈1.5 x 5")