{"version":"1.0","type":"link","title":"Sector clock - Newikis","description":"A sector clock or colour change clock is a round colour-coded clock that was used at military airfields and observation posts in the United Kingdom to help track the movements of enemy aircraft and coordinate and control air defences.","provider_name":"Newikis","provider_url":"https://newikis.com","cache_age":86400,"thumbnail_url":"https://thumb.wikimedia.org/wikipedia/commons/thumb/e/e2/World_War_II_RAF_sector_clock.jpg/1280px-World_War_II_RAF_sector_clock.jpg","thumbnail_width":1280,"thumbnail_height":1424}