Exactile is the result of a collaboration between BDi a research and IP development partnership of which i am half, and TecMinho from the university of Minho in Portugal.
Designed as an improvement on and replacement for the hideous little tile spacers currently available, Exactile is a return to the more traditional tool concept but instead of wedges, is a single, rigid and accurate placement guide for floor tile.
A more elaborate version has been developed for the tile industry incorporating a bubble level, and a series of blades that can be arranged in different ways to cover all kinds of tile laying patterns, including tozzetto tiles. This basic set allows the DIY tiler to lay tile more accurately while avoiding the need for spacers. There is a problem with spacers in that they are frequently left in place, grouted over, and cause tiles to lift. By removing the spacer from the equation, and increasing laying accuracy, there is a double benefit for the user.
A manual describing the Exactile in greater detail is in edit at present and will appear on Lulu shortly for free download, or purchase in a nice shiny cover.
If you have further questions in the meantime, please make contact.