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TTB-Ⅰ/TTB-Ⅱ Overhead Projector
--Stage, 285×285mm
--24V300W halogen lamp
--Average illumination 2000 lumens
--Central illumination 3900 lumens
--Lens:TTB-Ⅰ,290mm focal length 1-element
TTB-Ⅱ,310mm focal length 3-element
--Lamp-saver switch
--Quick lamp changer
--360° rotatable lens holder
--Fringing adjustment
TTB-4 Ⅱ Overhead Projector
--Stage, 285×285mm
--36V400W halogen lamp
--Average illumination 2200 lumens
--Central illumination 4300 lumens
--310mmfocal length 3-element lens
--Lamp-saver switch
--Quick lamp changer
--360° rotatable lens holder
--Fringing adjustment
TTB-E Overhead Projector
--Continous light regulator to extend lamp life
--Suitable for TTB-Ⅰ/TTB-Ⅱ/TTB-4Ⅱ
--Patented model, No.92218837.0
--Others:same as TTB-Ⅰ/TTB-Ⅱ/TTB-4Ⅱ
TTB-Z Overhead Projector
--Folding post,self contained unit
--Suitable for TTB-Ⅰ/TTB-Ⅱ/TTB-4Ⅱ
--Others:same as TTB-Ⅰ/TTB-Ⅱ/TTB-4Ⅱ
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