http://www.myfonts.com/fonts/thefoundry/foundry-dat/

Foundry Dat is created with a common horizontal dash grid structure for accurate layering when characters are superimposed. Foundry Dat’s integrated background aligns vertically and horizontally, when set solid, forming a continuous pattern.Foundry Dat’s companion family Foundry Dit functions as a legible correspondence font, with a ‘typewriter’ feel.Each family contains: light, regular, medium and bold weights. Foundry Dat comes with a series of dashes to extend the background grid. Characters can also be offset to make different patterns – in the process becoming images – a graphic language with total integration of form and function.