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The device, called InPlanT, is based on the acquisition of the luminous signal retroreflected by a spherical glass target and impinged on a photodiode after mechanical modulation. The received signal is reduced to the sought straightness profile using dedicated software. The system was characterized with a high-accuracy CMM and the maximum error of indication was derived.<\/jats:p>","DOI":"10.3390\/s23062912","type":"journal-article","created":{"date-parts":[[2023,3,8]],"date-time":"2023-03-08T02:08:14Z","timestamp":1678241294000},"page":"2912","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Investigation on Modulation-Based Straightness Measurement"],"prefix":"10.3390","volume":"23","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-3472-0853","authenticated-orcid":false,"given":"Andrea","family":"Egidi","sequence":"first","affiliation":[{"name":"Istituto Nazionale di Ricerca Metrologica (INRiM), 10135 Torino, Italy"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1117-8501","authenticated-orcid":false,"given":"Alessandro","family":"Balsamo","sequence":"additional","affiliation":[{"name":"Istituto Nazionale di Ricerca Metrologica (INRiM), 10135 Torino, Italy"}]},{"given":"Davide","family":"Corona","sequence":"additional","affiliation":[{"name":"Istituto Nazionale di Ricerca Metrologica (INRiM), 10135 Torino, Italy"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6233-5429","authenticated-orcid":false,"given":"Marco","family":"Pisani","sequence":"additional","affiliation":[{"name":"Istituto Nazionale di Ricerca Metrologica (INRiM), 10135 Torino, Italy"}]}],"member":"1968","published-online":{"date-parts":[[2023,3,7]]},"reference":[{"key":"ref_1","unstructured":"(2011). 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