Quite apart from mechanical difficulties, the expansion and contraction of metal parts with changes of temperature altered the rate of a watch or clock.
Ngaphandle kobunzima bukamatshini,ukuvuleka nokucutheka kwenxenye yeentsimbi ngokutshintsha kwamaqondo obushushu bekuyitshintsha indlela esebenza ngayo (IWOTSHI) intsimbi leyo.