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 Nikon L31 and Canon ELPH 135 side-by-side from the front, back and top in their relative dimensions. Nikon L31 has external dimensions of 96 x 59 x 29 mm (3.78 x 2.32 x 1.14″) and weighs 160 g (0.35 lb / 5.64 oz) (including batteries). Canon ELPH 135 has external dimensions of 95 x 54 x 22 mm (3.74 x 2.13 x 0.87″) and weighs 127 g (0.28 lb / 4.48 oz) (including batteries).
Below you can see the front view size comparison of Nikon L31 and Canon ELPH 135. Canon ELPH 135 is clearly the smaller of the two cameras. Its body is 1mm narrower, 5mm shorter and 7mm thinner than Nikon L31.
Here is the back view size comparison of Nikon L31 and Canon ELPH 135.
Now lets look at the top view comparison of Nikon L31 and Canon ELPH 135.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Canon ELPH 135 is significantly lighter (33g ) than the Nikon L31 which may become a big advantage especially on long walking trips.
Unfortunately neither Nikon Coolpix L31 nor Canon PowerShot ELPH 135 (IXUS 145) 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 Compact Cameras with Weather Sealing
LCD Screen Size and Features
Nikon L31 and Canon ELPH 135's LCD screens has the same diagonal size of 2.7".
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.