Rudder drop : How to measure

What Is Propeller Drop and How to measure propeller drop? poker gauge for propeller drop Which of the following instruments measures propeller drop? A Poker Gauge B Telescopic feeler gauge C Trammel D Propeller drop gauge Which of the poker nft Measure propeller drop; Take unit to tdc; Remove rope guard and drain plug; Take prop drop reading using poker gauge at top and bottom

poker stars pa Propeller Drop measuring in dry dock Now due to the weight of propeller and the clearance