The Triplett Vintage DIGI-Probe Digital Multimeter, model 3525-A, is a handheld multimeter with a  design that offers resistance, DC voltage, and AC voltage measurement capabilities. It features a digital display with 4000 counts and is made in the United States. This collectible piece comes with its original case, making it a valuable addition for collectors or professionals in the field of electrical testing and measurements. There is no manual included.