1. A general system of measurement for urethral, uterine, rectal and other instruments: and an adaptable metric gauge Author(s): Thomas, Charles Hermon, author Publication: [Philadelphia] : [publisher not identified], [1879] Subject(s): Equipment and SuppliesWeights and Measures
2. The perimetric dimension system: a general system of measurement for urethral, uterine, rectal and other instruments, and an adaptable metric gauge Author(s): Thomas, Charles Hermon, author Publication: [Philadelphia?] : [publisher not identified], [1879?] Subject(s): Equipment and SuppliesWeights and Measures -- standards
