Five specimens of water pipes, one of twelve models for instruction in hygiene, unsigned, England, 1896
Model of glass lined iron water pipe, one of five specimens of water pipes, and one of twelve sets of hygiene instruction models, unsigned, England, 1896
Model of two different diameter tin lined iron water pipes, screwed together, one of five specimens of water pipes, and one of twelve sets of hygiene instruction models, unsigned, England, 1896
Model of lead pipe, one of five specimens of water pipes, and one of twelve sets of hygiene instruction models, unsigned, England, 1896
Lead lined pipe, one of five specimens of water pipes, and one of twelve sets of hygiene instruction models, unsigned, England, 1896
Iron straight connector, one of five specimens of water pipes, and one of twelve sets of hygiene instruction models, unsigned, England, 1896
