Safeguarding The Taxicab Passenger.

The Intricacies of Taximeters. How the Instruments are Tested Before Approval. Dealing with Those Overhauled Annually. O ,(1,NE of the most complicated and pieces of mechanism......

A Novel Piston Ring

W E have recently received from Messrs. Henderson Bros., 77, Windsor House, Victoria Street, London, S.W.1, details of a new type of piston ring, sold under the name of Perfect......