Molded into the underside of the base, to the left
Molded into the underside of the base, an L inside 2 concentric circles, above "4249076"
Molded into the underside of the base toward the front
overall: 2 3/8 in x 6 3/4 in x 8 3/8 in
Rounded triangular shape with a heavy metal base, an adjustment knob, and an operator handle. Two pins protrude from below the base. IBM is in white letters at the front. Below the base there is an adjustment mechanism.