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 A1000 and Pentax MX-1 side-by-side from the front, back and top in their relative dimensions. Nikon A1000 has external dimensions of 114 x 72 x 41 mm (4.49 x 2.83 x 1.61″) and weighs 330 g (0.73 lb / 11.64 oz) (including batteries). Pentax MX-1 has external dimensions of 122 x 61 x 51 mm (4.8 x 2.4 x 2.01″) and weighs 391 g (0.86 lb / 13.79 oz) (including batteries).
Below you can see the front view size comparison of Nikon A1000 and Pentax MX-1. Nikon A1000 is 8mm narrower and 10mm thinner than Pentax MX-1 but it is also 11mm taller.
Here is the back view size comparison of Nikon A1000 and Pentax MX-1.
Now lets look at the top view comparison of Nikon A1000 and Pentax MX-1.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Nikon A1000 is significantly lighter (61g ) than the Pentax MX-1 which may become a big advantage especially on long walking trips.
Unfortunately neither Nikon Coolpix A1000 nor Pentax MX-1 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 A1000 and Pentax MX-1'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.