This replica Jaeger 125mm tacho has the correct Italian marking G/m x 100 rather than the French markings of tr/mn and uses high quality Swatch designed stepper motors to give accurate, typically + or - 1%, readings from a variety of sources including the negative side of the ignition coil and sensors picking up targets on the flywheel or camshaft. The stepper motors are controlled by a microprocessor which allows the tachos to copy period chronometric action and to control the red tell-tale hand in different ways (which you can choose). Beautifully made with a choice of black or chrome bezel which simply screws on to the high quality aluminium instrument body. Classic Alfa production made in the UK. Please choose the bezel colour from the dropdown menu.