Section 19A(3) in The West Bengal Factories Rules, 1958
(3)If the Inspector has reasons to believe that a substantial amount of heat is added inside the environment of a workroom by radiation from walls, roof or other solid surroundings, he may, subject to the control of the Chief Inspector, serve on the manager of the factory an order requiring him to provide one or more globe thermometer(s) referred to in the first proviso to sub-rule (I), to place them at places as specified in the order and to keep a record of the temperature in a suitable register which shall be kept available for examination by an Inspector at all times during working of the factory.