Preheat oven to 375° F, grease a baking sheet.
In an ample bowel, mix flour, sugar, baking powder, cream of tartar and salt. With a pastry blender (Or fork if you want to feel pain) cut in the butter until the mixture looks like bread crumbs.
Stir in oats and dried fruit.
Make a well in center.
In a small bowl or cup, mix egg and milk, and pour into the well you made in the dry ingredients. With a fork (which you happen to have nearby because you don’t have a pastry blender), stir wet ingredients into the dry ingredients, until everything is evenly moistened and comes together in a ball. But don’t over handle or it makes the scones tough. The dough should be soft and crumbly.
Pat the dough out on a lightly floured board to form an 8-inch circle.
Transfer to the greased baking sheet.
Cut dough into 8 wedges with a lightly floured knife, or just use a pizza cutter.