Refer to the diagram of piping isometric. Assume that the centerline to face dimension of the tee is 7/8″. The make up length is 7/16″. How long should the horizontal piece be between the two tees be cut?

Refer to the diagram of piping isometric. Assume that the centerline to face dimension of the tee is 7/8″. The make up length is 7/16″. How long should the horizontal piece be between the two tees be cut?