Carl Zeiss, Jena Nr. 11794. Pulfrich Refractometer c. 1920

Carl Zeiss, Jena Nr. 11794

Pulfrich Refractometer c. 1920


$Carl Zeiss, Jena Nr. 11794. Pulfrich Refractometer c. 1920$	$Carl Zeiss, Jena Nr. 11794. Pulfrich Refractometer c. 1920$
$Carl Zeiss, Jena Nr. 11794. Pulfrich Refractometer c. 1920$
$Pulfrich Refractometer$