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 Olympus E-M10 II and Panasonic GF7 side-by-side from the front, back and top in their relative dimensions. Olympus E-M10 II has external dimensions of 120 x 83 x 47 mm (4.72 x 3.27 x 1.85″) and weighs 390 g (0.86 lb / 13.76 oz) (including batteries). Panasonic GF7 has external dimensions of 107 x 65 x 33 mm (4.21 x 2.56 x 1.3″) and weighs 266 g (0.59 lb / 9.38 oz) (including batteries).
Below you can see the front view size comparison of Olympus E-M10 II and Panasonic GF7. Panasonic GF7 is clearly the smaller of the two cameras. Its body is 13mm narrower, 18mm shorter and 14mm thinner than Olympus E-M10 II.
Here is the back view size comparison of Olympus E-M10 II and Panasonic GF7.
Now lets look at the top view comparison of Olympus E-M10 II and Panasonic GF7.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Panasonic GF7 is significantly lighter (124g ) than the Olympus E-M10 II which may become a big advantage especially on long walking trips.
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 Olympus E-M10 II and Panasonic GF7 have the same Micro Four Thirds lens mount and Four Thirds sized sensors, lenses will not be a differentiator on total size of the system.
Unfortunately neither Olympus OM-D E-M10 II nor Panasonic Lumix DMC-GF7 provides any type of weather sealing in their body, so you have to give extra care especially when you are shooting outdoors. If weather sealing is a must-have feature for you, check these sections: Top Mirrorless Cameras with Weather Sealing
LCD Screen Size and Features
Olympus E-M10 II and Panasonic GF7's LCD screens has the same diagonal size of 3".
Both cameras feature Tilting screens
where you can change the angle of the screen to make it easier to shoot from waist or over the head levels.