Optika's ST-30B-2L gives an entire stereomicroscopes range designed to satisfy every need in both teaching and amateur fields. The whole range, from the ” little ” MS-2 up to the ST-50, is completely metal-made and assembled according to the best technical operating. Optical system, due the quality of transparency and depth, is at the top of its category. The ST-30-2Led convinces with the following specifications: its head is fixed - inclined bachwards 45°, it's Binocular heads have the interpupillary distance adjustable between 51 and 75 mm. Dioptric compensation adjustable on eyepiece tubes. The eyepieces of this microscope is WF 10x/20 mm. Illuminator is Incident and transmitted light -- 12V/10W tungsten bulbs. On every model focus adjustment by means of a pair of knobs located on each side of the stand.