About: reference beam

Premodifier: reference
Head noun: beam

Same concepts
http://dbpedia.org/resource/Reference_beam

Broader concepts

label	provenance	confidence
laser beam	isap:165803317	0.673886
light beam	isap:165803467	0.664056
beam splitter	isap:459244212	0.646894
beam	isap:165803420	0.597558

Narrower concepts

label	provenance	confidence
beam	isap:165803301	0.189949