Kvartsur
Kvartsur is a term that generally refers to a quarter-hour clock or a timepiece that marks time in fifteen-minute intervals. This can manifest in various forms, from decorative clocks designed with prominent quarter-hour markers to more functional devices that specifically highlight these segments of an hour.
Historically, the concept of dividing the hour into smaller, easily digestible units predates the widespread availability
In some contexts, "kvartsur" might also refer to a clock designed for a specific purpose where quarter-hour