Below you can see the front view size comparison of Canon 7D and Canon 60D. Canon 60D is 3mm narrower and 5mm shorter than Canon 7D but it is also 5mm thicker.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Canon 60D is 105g lighter than the Canon 7D but we don't think this will make a significant difference.
Also keep in mind that body weight is not the only deciding factor when comparing two interchangeable camera bodies, you have to also take into account the lenses that you will be using with these bodies. Since both Canon 7D and Canon 60D have the same APS-C sized sensor, their lenses for a similar focal length and aperture will be similar in size and weight.