Patent ID: 8857712

Claim:
A method for assembling a tunnel data reader arrangement comprising: receiving a first and second data reader structure at an assembly location where a tunnel data reader arrangement is to be assembled, wherein the first data reader structure includes a first data reader and the second data reader structure includes a second data reader; providing a counter structure at the assembly location; providing a chassis at the assembly location; forming a tunnel data reader arrangement at the assembly location by; matching a first indexing feature of the first data reader structure with a corresponding first indexing feature of the chassis; attaching the first data reader structure to the chassis such that the first data reader structure extends upwardly relative to an uppermost, top surface of the chassis, wherein the first data reader is arranged in a first position at a first angular orientation with respect to the chassis; matching a second indexing feature of the second data reader structure with a corresponding second indexing feature of the chassis; and attaching the second data reader structure to the chassis such that the second data reader is arranged in a second position at a second angular orientation with respect to the chassis; and coupling the tunnel data reader arrangement to the counter structure.