ISO/TC 114/SC 14 - Table and wall clocks

This document specifies the terms and definitions, and the signal receiving general measurement method for radio-controlled clocks. It is applicable to the analogical or/and liquid crystal display or/and LED display radio-controlled clocks, and the radio-controlled clock movements can also refer to it.

ISO 19235:2015 specifies the basic parameters, requirements, and testing methods of timing accuracy for analogue quartz clocks, hereinafter referred to as "the quartz clock". This International Standard applies to analogue quartz table and wall clocks which the oscillator frequency is 32 768 Hz and the nominal voltage is DC 1,5 V. Analogue quartz clock movements can refer to it. This International Standard does not apply to the following quartz clocks: - clocks for particular applications such as clocks used in aircraft, ship, vehicle, and facilities; - clocks incorporated into other products; - clocks in which time is radio-synchronized.

ISO 13074:2012 specifies the fitting dimensions of movements to hands. It is applicable to analogue quartz table and wall clock movements, with and without alarm, that have the following properties: minute wheel shafts with an outer diameter of between 1,3 mm and 3,6 mm; hour wheel, minute wheel, second wheel and alarm wheel shafts made of metal and plastic material. ISO 13074:2012 can be referenced for other types of analogue quartz clock movements.