test card in Finnish
test card in Finnish
näkötaulu
(optometry) A card printed with various letters or symbols, used in testing vision.
testikuva
(UK, television) A test signal, typically broadcast at times when the transmitter is active but no programme is being broadcast (often at startup and closedown).
virityskuva
(UK, television) A test signal, typically broadcast at times when the transmitter is active but no programme is being broadcast (often at startup and closedown).