An unusual hygrodiek, the shaped metal frame mounted with wet and dry bulb thermometers, the pointer reading against a scale for relative humidity at due point inscribed very moist, healthy and very dry, the pointer operating via a pantograph system at the reverse, the back side pasted with an original maker's directions for use label, the scale card inscribed Manufactured By N.M. Lowe, Boston. Entered according to Act of Congress in the year 1867 by N.M. Lowe in the Clerk's Office of the District Court of Mass. , on marble plinth base -- 12¾in. (32.3cm.) high See Colour Illustration
An unusual hygrodiek, the shaped metal frame mounted with wet and dry bulb thermometers, the pointer reading against a scale for relative humidity at due point inscribed very moist, healthy and very dry, the pointer operating via a pantograph system at the reverse, the back side pasted with an original maker's directions for use label, the scale card inscribed Manufactured By N.M. Lowe, Boston. Entered according to Act of Congress in the year 1867 by N.M. Lowe in the Clerk's Office of the District Court of Mass. , on marble plinth base -- 12¾in. (32.3cm.) high See Colour Illustration
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.jpg "Quelle: Christie's")
