Supply Of 1. Data Retrieval Unit For Medha Make Speedometer Type Mrt918, Mrt921 & Mrt922 One Dru Sufficient For Medhamake Speedometer Type Mrt921 & Mrt922. Medha Part No. Sp0000000032. Software For Data Analysis And Retrieval For Speedometer Type Mrt 922 To Medha Part No. Spmsw922.