study · low wall · brass knurled valve
brass body, brass stem, a knurled wheel the size of a small saucer. it controls the warmth of the study, in theory; in practice it has three positions only — off, warm, far too warm — and the wheel cannot be trusted between them.
it clicks twice when opened in winter, then sighs. the radiator itself ticks for forty minutes after a turn, as the metal remembers what shape it is. on cold nights this is the building's loudest tick; on warm nights it is the building's softest.
field-note · the knurling has been polished bright on the underside, where the hand cradles it; the top is still the colour of old brass.
it lives near the skirting; it warms the study; its hour is four a.m., when houses keep their plumbing private.