# Absolute flat test using rotated and multi-shifted maps with relative tilt measurement

> Research article (Optics and Lasers in Engineering, 2018) · cited 22× · AI/ML

**Wikidata**: [openalex:W2900172480](https://www.wikidata.org/wiki/openalex:W2900172480)  
**Source**: https://4ort.xyz/entity/absolute-flat-test-using-rotated-and-multi-shifted-maps-with-relative-tilt-measurement