Autometer Ultimate Playback Tachometers Have Helped Drag Racers Trip The Win Lights For Decades By Providing The Necessary Data To Protect Engines, Fine Tune And Diagnose Clutch And Converter Strategies, Nail Shift Points And Improve Launch Consistency. The Latest Ultimate Iii Design Is Engineered To Be The Best Version Yet With A Comprehensive Feature Set Suitable For Beginners Through More Advanced Data Users Offering Both Direct Data Playback As Well Pc Analysis Capabilities Out Of The Box. Built Around Autometers Responsive Competition Grade Movements, The Ultimate Iii Is Capable Of Tracking The Fastest Revving Engines With 0-11K Rpm Sweep Time Of Just 333 Milliseconds. 30% Lighter Than The Ultimate Ii Designs Which They Replace, Ultimate Iii Tachometers Still Come Packed With Features. Record And Playback Up To 4 Runs (60 Sec. Ea.) Worth Of Engine And Driveshaft Rpm Data Or Download High Resolution (100 Hz) Data To Our Easy To Use Datapro Software For More Advanced Analysis. 4 Stage Shift Light Control Is Standard And A New And Improved Arms (Automatic Recording Memory Start) System Makes For Worry-Free Driver Operation. The Latest Led Technology Provides Superior Visibility, Shock And Vibration Resistance While Reducing Power Consumption Requirements And Expanded Cylinder Selection Means They Support More Applications Than Ever Before!