microscope, tool to view miniature items, telescope, tool to view far away items, stethoscope, medical tool to listen to the inner body, helioscope (helio = sun), instrument to view the sun without eye damage, horoscope, tool used to tell the future, kaliedoscope, toy with two or more mirrors inside, seismoscope (seis = shake, rocking), tool to measure earthquakes.

arnold scope

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