Alpha STO-4 zoom stereo microscopes

Head:

• 45° inclined 360° rotatable binocular or trinocular
• Focusable tube for connecting a 23.2 mm camera on trinocular models

Eyepeices:

• WF 10x/22mm, can also be used with glasses
• Diopter adjustment: ±5D, on both eyepieces
• Pupillary distance adjustment: 52 -75 mm

Objectives:

• Zoom ratio: 1 : 6.3
• Standard magnification with WF 10x eyepieces: 8-50x
• Field of view: 27-4.4 mm 
• Workingdistance: 115 mm
• Zoom magnification with  "click-stop" mechanism, 0.8, 1, 2, 3, 4, 5 steps

Pillar stand technical data (only STO-4 and STO-4T models):

• Focusing system: single-axis coarse adjustment
• Focusing bracket diameter: 76mm
• Focus range: 60mm
• Base plate size: 320 x 280 mm
• Rod:  ø32 mm, rod leght 360 mm
  
  
  

Rack and pinion stand technical data (only STO-4LED and STO-4TLED models):

• Focusing system: single-axis coarse adjustment
• Focusing bracket diameter: 76mm
• Focus range: 100mm
• The focuser can be adjusted to a high or low position using a screw.
• Incident and transmitted, dimmable, high-brightness 12V 2W LED, with built-in power supply
• Size: 240mm (leght) x 292mm (dept) x 318mm (high)
• Specimen clamps, ø 100 mm glass and black and white table insert
• EC-Power plug (only STO-4LED and STO-4TLED models)

Boom stand technical data (STO-4N and STO-4TN models):

• Focusing system: single-axis coarse adjustment
• Focusing bracket diameter: 76mm
• Focus range: 60mm
• Base plate size: 230x230mmx40mm 
• Vertical rod leght: 380mm
• Horizontal rod movement: 235mm
• Weight: 22Kg
• Rod diameter: ø32mm

Flexi stands (only STO-4FLEX, TFLEX, FLEX-G and TFLEX-G ):

• Focusing system: single-axis coarse adjustment
• Focusing bracket diameter: 76mm
• Focus range: 80mm
• Max. arm extension: 1030 mm.
• The range of movement of the arm system in the vertical direction: +/-150 mm.
• The arm system can be rotated 360° on the rod. Rod leght: 420 mm
• Base plate size: 330 x 330 x 20mm.
  
  
  
• Focusing system: single-axis coarse adjustment
• Focusing bracket diameter: 76mm
• Focus range: 80mm
  
  
  

Accessories in the box:

• Dust cover
• User manual