Size and weight is a big decision factor when you are trying to find the ideal camera for your needs.
In this section, We are going to illustrate Panasonic TS2 and Panasonic GM1 side-by-side from the front, back and top in their relative dimensions. Panasonic TS2 has external dimensions of 99 x 63 x 24 mm (3.9 x 2.48 x 0.94″) and weighs 188 g (0.41 lb / 6.63 oz) (including batteries). Panasonic GM1 has external dimensions of 99 x 55 x 30 mm (3.88 x 2.16 x 1.2″) and weighs 204 g (0.45 lb / 7.20 oz) (including batteries).
Below you can see the front view size comparison of Panasonic TS2 and Panasonic GM1. As you can tell, actually this is not a fair size comparison since Panasonic TS2 has a built-in lens but Panasonic GM1 doesn't. Once you put a lens on GM1, its thickness will increase significantly.
Here is the back view size comparison of Panasonic TS2 and Panasonic GM1.
Now lets look at the top view comparison of Panasonic TS2 and Panasonic GM1.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Panasonic TS2 is 16g lighter than the Panasonic GM1 but we don't think this will make a significant difference.
Again, this comparison may not be very useful in real life as we are comparing the weight of a camera with a built-in lens to the body-only weight of an interchangeable lens camera. Once you put a lens on GM1, the total kit will weigh much higher.
LCD Screen Size and Features
Panasonic GM1's 3" LCD screen is slightly larger than Panasonic TS2's 2.7" screen.
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.