remove old elev angle variable and replace with elev_angle

first_order.scad

@@ -239,15 +239,12 @@ module mount (angles, wall, separation) {
 	}
 }
 
-// elevation angle for capsule holders
-elev = atan(1 / sqrt(2));
-
 // render a complete microphone
 if (rendermic == 1) {
-	capsule(45, elev, [-120, 0, 120], 60);
-	capsule(-45, -elev, [-120, 120], 0);
-	capsule(-135, elev, [-120, 0, 120], 60);
-	capsule(135, -elev, [-120, 120], 0);
+	capsule(45, elev_angle, [-120, 0, 120], 60);
+	capsule(-45, -elev_angle, [-120, 120], 0);
+	capsule(-135, elev_angle, [-120, 0, 120], 60);
+	capsule(135, -elev_angle, [-120, 120], 0);
 	// the mount
 	mount([-45, 135], 1, capsule_bottom);
 }