Metal grating and cantilevered emitter holder and sensor improvements for pitching tunnel apparatus, system, method, and computer program product

Abstract

A tunnel may include: a first and second pair of parallel walls, where the second pair may be orthogonal or at 90 degrees to the first pair, and the first pair may include: a first wall with a first receiver sensor array including receiver light or laser sensors mechanically coupled and oriented inwardly forming a line along a length; and a voltage measurement display electronically coupled to each receiver sensor, configured to electronically measure a reading of the receiver sensor; a second wall including: a metal grating including: a plurality of parallel metal length members forming: a two dimensional array of rectangular openings passing through the metal grating, where each rectangular opening is configured to receive: at least one laser emitter coupler configured to: mechanically couple a transmission laser emitter toward a corresponding receiver sensor, opposite; and facilitating alignment adjustment of the transmission laser emitter with the corresponding receiver sensor.

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