This vintage Sears tachometer dwell meter Model 21015 is a great addition to any automotive enthusiast's tool collection. With its reliable brand, this used diagnostic service tool provides accurate readings for measuring engine speed and ignition point dwell angle.

The manufacturer part number 244.21015 ensures compatibility with a variety of vehicles and its compact size makes it easy to use and store. Perfect for DIY mechanics or professional technicians, this versatile multimeter and analyzer is a must-have tool for any automotive repair job.