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apertometer [ˌæpə'tɔmitə] n
meas.inst. Öffnungswinkelmesser m
opt. Apertometer n (for measuring the numerical aperture)
phys. Apertometer n; Aperturmesser m
apertometers optics n
gen. Apertometer Optik
apertometers: 1 phrase in 1 subject
Optics branch of physics1