Electronic Track Recording Car --- The construction features of this car are the same as those of the mechanical car excepting that the sensing elements of various track parameters transmit impulses electrically. Electrical track recorder gives out the various track parameters in analogue form on a graph paper. With the indigenously modified electronic track recording cars, it is possible to get a continuous record of alignment of each rail on a 7.2 M. chord in addition to the parameters discussed in the previous page for Mechanical Track Recording car. In the electronic car, alignment is measured by versines on a chord length of 3.6 M. The mid-chord processor facilitates the conversion of the versines measured on 3.6 M base to 7.2 M base, electronically.