A.W. Sperry Instruments Volt Multitester Multimeter SP-10A 6-Function 15-Range

Vintage Multi-Tester AW Sperry, Model SP-10A With Test Leads Case, Made in Korea

Vintage Multi-Tester AW Sperry, Model SP-10A 15 Range 6 Functions

Sperry 6-Function Analog Volt Multitester Multimeter Tester Model SP-6A

A. W. Sperry SP-10A Multitester Analog Multimeter Electrical Tester OHM

New Sperry 5-Function Analog Volt Multitester Multimeter Tester Model SP-5A