Mazzer Electronic Dosing Card e-64-e-66-p64-p66-parts/e-64-e-66-p-4-p-6-manual-group It features a rectangular face

It features a rectangular face rather than the original diamond-shaped face

See the manufacturer's spec sheet for reference

Measurements in ml

M31 Compact

Brass piston sleeve for the Rossi AL67 lever group

Mazzer Electronic Dosing Card e-64-e-66-p64-p66-parts/e-64-e-66-p-4-p-6-manual-group It features a rectangular faceMazzer Electronic Dosing Card This push button display card (version S000SPU03 DQQ) controls dose timing on Mazzer's electronic doser models, letting you program single, double, and third dose times. COMPATIBILITY Fits: Mazzer Kony, Major, Robur, Royal, and Super Jolly 'E' Electronic doser models Replaces: MAZ_247 (version S000SPU03 DQQ) INSTALLATION After installing, the display prompts you to select your grinder model (No0 through No5) on first