A '5-minutes-to-go' timer-alarm clock, by Adamson G
A ‘5-minutes-to-go’ timer-alarm clock, by Adamson Green & Co, Felling-on-Tyne, set to strike at minute intervals and thought to be that used by the Aintree starting grid marshals to regulate the sounding of the klaxon horns that warned team personnel when to leave the grid and drivers and mechanics when to start their engines; together […]
