version…

offset_2slaves.geo
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			cl1 = 1;
			cl2 = -0.15;
			offset = 0.25;
			Point(1) = {-0.5, -0.5, 0, cl1};
			Point(2) = {-0.5, 0.5, 0, cl1};
			Point(3) = {0.5, 0.5, 0, cl1};
			Point(4) = {0.5, -0.5, 0, cl1};
			Point(5) = {offset, 0.7+cl2, 0, cl1};
			Point(6) = {0.5 + offset, 1.4+cl2, 0, cl1};
			Point(7) = {-0.5 + offset, 1.4+cl2, 0, cl1};
			Point(8) = {-offset, 0.8+cl2, 0, cl1};
			Line(1) = {1, 4};
			Line(2) = {4, 3};
			Line(3) = {3, 2};
			Line(4) = {2, 1};
			Line(5) = {5, 6};
			Line(6) = {6, 7};
			Line(7) = {7, 8};
			Line(8) = {8, 5};
			Line Loop(9) = {1, 2, 3, 4};
			Plane Surface(9) = {9};
			Line Loop(11) = {5, 6, 7, 8};
			Plane Surface(11) = {11};
			Physical Line("Bottom") = {1};
			Physical Line("Top") = {6};
			Physical Line("Contact") = {3};
			Physical Surface("Top_body") = {11};
			Physical Surface("Bottom_body") = {9};