Products intended to control or modify specific elements of the physical environment or to measure the conditions and components of the natural or physical environment. Furnishings, fixtures and other assistive products for supporting activities in indoor and outdoor human-made environments, see 18. Assistive products for work activities and participation in employment, see 28.

Devices for measuring physical properties. Body thermometers, see 04 24 24. Personal scales, see 04 24 27. Assistive products for weighing and measuring to prepare food and drink, see 15 03 03. Clocks and timepieces, see 22 28 03. Measuring instruments and equipment for workplaces, see 28 18 03.

Devices for measuring and identifying temperature, humidity and ventilation.