Miniaturization 1 is a (new) prerequisite for modular armor; Miniaturization 2 is required for Mk2 components (shields and batteries).
Enables building miniature versions of the three assembling machines, which are 2x2 instead of 3x3 but more limited in their capabilities. Also adds a mini electric furnace - handy for saving space and requiring less retooling of your old burner furnace setup - if you can wait long enough for the research, anyway.
Limiting an assembler to one ingredient is... pretty limiting! (Level 3 assemblers can handle three ingredients which is enough for many common items.) Normal assembling machine included in picture for scale.
- v0.1.1: Made compatible with Factorio 0.11.x, tweaked recipes a little.