Battery is button cell model SR 626 SW

The original is in the London Science Museum

3" wide with 5 globes ranging from 18 to 24 degrees

Now Admiralty Chart 2345

Vintage Nautical Chart Prints - Admiralty Chart 394 - The Solent - Eastern Part Type:Canvas Battery is button cell modelFirst officially published in November 1800, navigation charts produced by the UK Hydrographic Office are an essential for sailors the world over and have an instantly recognisable, almost iconic, design. Now Vintage Nautical Chart 394, showing The Solent Eastern Part, is available to buy as a poster or canvas print to display in your home, office, or yacht club showcasing the features of your local coastline, or recalling a favourite voyage perhaps.