Illinois Statutes Chapter 225. Professions,Occupations and Business Operations § 705/7.19. Water and steam gauge on boilers

§ 7.19. Every boiler shall be provided with a glass water gauge and not less than three try cocks and also a steam gauge, except that where two or more boilers are equipped with a steam drum properly connected with the boilers to indicate the steam pressure and without any valves between the boilers and the steam drum, the steam gauge may be placed in the steam drum. A steam gauge shall be attached to the steam pipe in the engine house, and the steam gauges shall be placed in such a position that the engineer and the fireman can readily see what pressure is being carried. The steam gauges shall be kept in good order and adjusted, and be tested as often as every six months.