This National Optical digital stereo microscope comes with a Wifi digital tablet, which allows users to transmit live images to iOS or Android devices. Choose from an 8" or 10" tablet when ordering. 
- Head: Trinocular body includes camera adapter. Viewing head rotates 360º.
 
- Objective Lenses: Zoom range of 0.7x - 4.5x.
 
- Eyepieces:  Paired 10x widefield eyepieces are 45º inclined with dual diopter adjustments.
    Interpupillary adjustment from 55mm to 75mm. Accepts 23mm eyepiece reticle.
- Magnification: 7x - 45x. Optional auxiliary lenses or substitute eyepieces, which are available for purchase separately, can provide additional magnification.
 
- Specimen Stage: Two 80 mm stage plates are included: one frosted glass and one is a reversible black/ white plastic contrast. 
 
- Stand:  All metal frame.
    Heavy-duty post mount with locking collar, permits up or down adjustment of viewing head to accommodate different sized objects on stage. Stage has locked-on stage clips and a blue filter for transmitted light.
 
- Focusing:  Large dual focusing knobs have a slip clutch to prevent damage, and tension adjustment eliminates focus drift. Dual light controls can provide top only, bottom only, or dual illumination.
 
- Illumination: Top and bottom lights are 3W LED. The top light has a directional beam and rheostat control.
- Tablet and Camera (select tablet size when ordering):  Choose from the following integrated tablet options:
    
- 8" LCD Android tablet with 1280 x 800 screen resolution can connect to Wifi and Ethernet. Wifi camera resolution is 4.0 mp. MotiConnect App is preloaded on tablet.
 
- 10" LCD Android tablet with 1280 x 800 screen resolution can connect to Wifi and Ethernet. Wifi camera resolution is 4.0 mp. MotiConnect App is preloaded on tablet.
 
- Size:   Height (microscope only): 340mm (13.4 in) up to 433 (17 in),
    Base width: 171mm (6.8 in), Base depth: 242mm (9.5 in)
- Weight: 5.4 kg (16 lbs) 
- Warranty: Lifetime limited warranty.
- Working Distance: 110mm
National Optical BTI1-440T-440PLL, BTI2-440T-440PLL