26. [ Hygrometer not be affixed to wall, etc., unless protected by wood. [Substituted by SRO No. 1149/2001 dt. 28-12-2001.]
(1)No hygrometer shall be fixed to a wall, pillar or other surface unless protected there from by wood or other non-conducting material at least 12mm in thickness and distant at least 25 mm from the bulb of each thermometer.(2)No hygrometer shall be fixed at a height of more than 170cm from the floor to the top of thermometer stem or in the direct draughts from a fan, window or ventilating opening.]
