The three principal groups differ remarkably in their behaviour towards indicators.
An alkali is distinguished from an acid or neutral substance by its action on litmus, turmeric and other indicators.
Maximum speed controllers in connexion with the winding indicator, which do not allow the engine to exceed a fixed rate of speed, are also used in some cases, with recording indicators.
Performance Indicators Value of events as perceived by attendees.
Clean aerodynamics The distinctive front cowling is beautifully sculptured around the radiator with its chrome surround and incorporates built-in direction indicators.
