30. Thermometers to be maintained in efficient order.
- Each thermometer shall be maintained, at all times during the period of employment, in efficient working order so as to give accurate indications and in particular-(a)the wick and the muslin covering of the wet-bulb shall be renewed once a week;(b)the reservoir shall be filled with water which shall be completely renewed once a day. The Chief Inspector may direct the use of distilled water or pure rain water in any particular mill or mills in certain localities;(c)no water shall be applied directly to the wick or covering during the period of employment.
