Apparatus for measuring the density of a liquid, utilizing the l

Apparatus for monitoring suspended particles in a liquid

Apparatus for optically analyzing a solution

Apparatus for optically analyzing fluids

Apparatus for textile color analysis

Apparatus for textile color analysis

Apparatus for the automatic alignment of two superimposed object

Apparatus of spectroscopy of scattering light

Arrangement for measuring, checking and control of the position

Asymmetric double pass grating monochromator

Automatic compensation for densitometer imbalance

Automatic densitometer and method of color control in multi-colo

Automatic exposure control for a luminous object monitor system

Automatic flat width control

Automatic polarization analyzer device

Automatic polarization analyzing device

Automatic refractometer

Automatic refractometer

Automatic zeroing circuit to compensate for dark currents or the

Background correction in spectro-chemical analysis