HELIOMETER instrument for measuring apparent diameter of the sun
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AnswerCrossword Clue
heliometersHELIOMETER, instrument for measuring apparent diameter of the sun
heliometrymeasurement by use of a heliometer, an instrument for measuring apparent diameter of the sun
heliometriesHELIOMETRY, measurement by use of a heliometer, an instrument for measuring apparent diameter of the sun
heliometerinstrument for measuring apparent diameter of the sun
dioptresinstrument, invented by Hipparchus, to measure the apparent diameter of the sun or moon or to estimate the size or elevation of distant objects
diopterinstrument, invented by Hipparchus, to measure the apparent diameter of the sun or moon or to estimate the size or elevation of distant objects
dioptralinstrument, invented by Hipparchus, to measure the apparent diameter of the sun or moon or to estimate the size or elevation of distant objects
dioptreinstrument, invented by Hipparchus, to measure the apparent diameter of the sun or moon or to estimate the size or elevation of distant objects