Wiktionary
speculums
n. (plural of speculum English)
Usage examples of "speculums".
Thermometers, dynamometers, exploring-tubes, little mirrors that went half-way down to my stomach, tuning-forks, ophthalmoscopes, percussion-hammers, single and double stethoscopes, speculums, sphygmometers,--such a battery of detective instruments I had never imagined.