This instrument YX-360TR is a portable multitester designated for measurement of weak current circuits. Panel face protection cover which serves also as a stand is employed. Multitester Model YX-360TRES Fuse & Diode Protection Use Two "AA" (1.5V) (NOT included) Weight: 5.0 oz. Dimension(approx): 3 1/4" x 4 3/4" x 1 1/2"