If steering components are changed only the toe setting is potentially affected, not camber or caster, so assuming the car drove okay before the steering components were changed, you only need to have the toe setting checked and set to spec. You can do this with a carpenter's tape in your garage if you wish.
I do all my alignment with a tape and inclinometer. Since the 190E 2.6 is front heavy (about 57 percent) I set the cam bolts in the lower control arm to achieve maximum negative camber and maximum positive caster, equal on both sides. This yielded about -0.75 degrees camber and +10.5 degrees caster, which reduces understeer. Toe-in is set to about 1/16" and there is no adverse tire wear.