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 Ricoh WG-6 and Olympus E-PL9 side-by-side from the front, back and top in their relative dimensions. Ricoh WG-6 has external dimensions of 118 x 66 x 33 mm (4.65 x 2.6 x 1.3″) and weighs 246 g (0.54 lb / 8.68 oz) (including batteries). Olympus E-PL9 has external dimensions of 117 x 68 x 39 mm (4.61 x 2.68 x 1.54″) and weighs 380 g (0.84 lb / 13.40 oz) (including batteries).
Below you can see the front view size comparison of Ricoh WG-6 and Olympus E-PL9. Ricoh WG-6 is 2mm shorter and 6mm thinner than Olympus E-PL9 but it is also 1mm wider. As you can tell, actually this is not a fair size comparison since Ricoh WG-6 has a built-in lens but Olympus E-PL9 doesn't. Once you put a lens on E-PL9, its thickness will increase significantly.
Here is the back view size comparison of Ricoh WG-6 and Olympus E-PL9.
Now lets look at the top view comparison of Ricoh WG-6 and Olympus E-PL9.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Ricoh WG-6 is significantly lighter (134g ) than the Olympus E-PL9 which may become a big advantage especially on long walking trips.
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 E-PL9, the total kit will weigh much higher.
LCD Screen Size and Features
Ricoh WG-6 and Olympus E-PL9's LCD screens has the same diagonal size of 3".
On the other hand, Olympus E-PL9 features a Tilting screen
where you can change the angle of the screen to make it easier to shoot from waist or over the head levels whereas the Ricoh WG-6 has a fixed type screen which provides less flexibility in shooting positions compared to E-PL9.