16

Apart from regular Lego and Duplo, what other sizes of brick have there been that have carried the Lego name? What is the compatibility between the different building scales?

16

The sizes are:

  • Regular lego.
  • Duplo. Intended for younger children than regular Lego. Bigger than regular lego, and compatible with regular lego. Still produced.
  • Quatro. Intended for younger childern than Duplo. Bigger than Duplo, and compatible with Duplo. No longer produced.
  • Primo. Intended for babies. Bigger than Quatro, and compatible with Duplo with special interface bricks.
  • Modulex. Intended for architectural models and commercial signage. Early sets were branded Lego. Not compatible with regular Lego bricks. No longer produced.
  • Samsonite Jumbo Bricks. Not compatible with regular Lego bricks. No longer produced.
  • Lego Soft Bricks. Not compatible with regular Lego bricks.
5

Besides Classic and Duplo (2x as big in each dimension, hence the name) there are several more official dimensions of LEGO bricks:

  1. Quatro: 2x as big as Duplo in each dimension, so 4x as big as LEGO Classic: http://alpha.bricklink.com/pages/clone/catalogitem.page?P=48201#T=S&O={}

enter image description here

  1. Modulex: Smaller brick width than Classic LEGO (5/8th), and with a 1:1 relation between height and width, whereas Classic LEGO has a 6:5 relation: http://alpha.bricklink.com/pages/clone/catalogitem.page?P=Mx1111L#T=S&O={}maller

enter image description here

  1. Jumbo: Fits in between Duplo and Quatro, 3x LEGO Classic in each dimension: http://alpha.bricklink.com/pages/clone/catalogitem.page?P=x1446#T=S&O={}

enter image description here

  1. Primo: 2x as big as Jumbo in each dimension, hence 6x Classic LEGO: http://alpha.bricklink.com/pages/clone/catalogitem.page?P=31000#T=S&O={}

enter image description here

There are still several more sizes, reported in Dag Bricks' excellent spreadsheet, but they are not similar to normal bricks in form and/or function, such as LEGO Gears, LEGO Soft Bricks and LEGO Tubs and cups.

Here is a comparison picture between all the formats, starting with Modulex and ending with Quatro:

enter image description here


Source used: http://www.dagsbricks.com/2013/09/lego-techniques-system-sizes-wrap-up.html

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