Where do i get Real life measurements/Dimensions plans??

Sorry i have no idea how to word in google or where i could ask, but here goes.

i have been making 3d models in blender using real life objects with real life measurements, example mugs pens,cups, toolbox tools etc.
i have been using standard 30cm rulers and a vernier caliper for these dimensions.

here the problem
i want to make stuff that i don’t actually have like chainsaws, motors, kitchen supplies so on.
but when i google these things i only get dimesion of height and width this is nice but i need all sides of the model.

is there a site that has like 3d blueprints/dimensions of objects
i want dimension like the link below

here an example of a fridge