P4-19F is a 1979 Brass Taffrail Log . This was manufactured in 1979 by Zakłady Mechaniki Precyzyjnej in Gdanask, Poland. The MERA-WAG symbol on the taffrail shows that this was built in coordination with The Union of the Automation Industry and Measuring Apparatus.
A taffrail log was a nautical instrument used to determine a vessel’s speed, or knots, through the water. It would have been connected to a spinner, which would have allowed the instrument to gauge the speed.
Base: 3.5″ x 1.75″
Weight: 15.5 lbs.
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