Propeller hydromatic governors : parts catalog / Hamilton Standard Propellers Hydromatic Quick-Feathering propellers : service manual / Hamilton Standard Propellers, Division of United Aircraft Corporation Hydromatic quick-feathering propellers : parts catalog / Hamilton Standard Propellers Hydromatic quick-feathering propellers models 23E50 - 31 and above with constant speed control : service manual / Hamilton Standard Propellers Hydromatic quick-feathering propeller / Hamilton Standard Propellers Bombini Parodi Delfino. 20mm B.P.D. shell mod. 1955 Hamilton Standard. Hydromatic quick-feathering propeller