Hints for the improvement of trusses; intended to render their use less inconvenient, and to prevent the necessity of an understrap. With the description of a truss of easy construction and slight expence [sic], for the use of labouring poor / [James Parkinson].

Licence: Public Domain Mark

Credit: Hints for the improvement of trusses; intended to render their use less inconvenient, and to prevent the necessity of an understrap. With the description of a truss of easy construction and slight expence [sic], for the use of labouring poor / [James Parkinson]. Source: Wellcome Collection.