7.—(1) During working hours, the temperature in all workplaces inside buildings shall be reasonable.
(2) A method of heating or cooling shall not be used which results in the escape into a workplace of fumes, gas or vapour of such character and to such extent that they are likely to be injurious or offensive to any person.
(3) A sufficient number of thermometers shall be provided to enable persons at work to determine the temperature in any workplace inside a building.