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Realizing that the bivalve speculum, opening transversely, did not meet all of the requirements of a nasal speculum, I was led to devise one for my own use that would overcome these difficulties. That I have succeeded, at least to my own satisfaction, is the excuse for presenting it to the profession. Its evolution extended over a period of about three years, during which time I made many modifications. The model, a cut of which I present, I have used about a year, and, in the majority of nares, it meets all of the requirements of an ideal speculum, both diagnostic and operative. It has merits that will appeal to the specialist as well as the general practitioner.
The instrument is to be held in the left hand of the operator for both nares, with the ball of the thumb on the screw head, thus
MONOSMITH OB. A NEW NASAL SPECULUM.. JAMA. 1903;XL(14):916–917. doi:10.1001/jama.1903.92490140030003