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Coarse motion with rack & pinion
and fine motion lever type with graduated drums. Monocular body
inclinable up to 90, mechanical tube length 160mm. Triple/Quadruple
revolving nose piece with accurate click stops.
Plain stage fixed with detachable mechanical stage having convenient adjustment for slide movement. Safety stopper to prevent slides & objectives. Sub stage abbe condenser focussable with rack and pinion. Concave & plain mirror in fork. Pressure die cast parts. Hyg. Eye Piece : 5x, 10x Ach. Objectives : 10x, 45x &
100x (SL) |
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Specifications:
Rack & Pinion system for coarse
motion. Sensitive focusing system free from back lash. Built in base
illumination with halogen lamp 6V 20W continues variable control. Latest
co-axial mechanical stage for an extra large viewing area. Replaceable
mirror for natural light. Substage abbe condenser on rack & pinion.
Superb in finish & workmanship.
Eye Piece : WF- 10 x (Paired)
Achromatic Objectives : 5x, 10x, 45x or 40x (SL) &100 x (SL) (Oil 1mm.) Optional Accessories Micro photography Attachment, Dark
Field Attachment, Phase Contrast Equipment, Video Projection & Image
Analysis System, Dual Viewing Attachment, Hyg. Eye Pieces 5x or 15x |
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Fixed objectives 2x or 3 x fixed eye
piece 10x (Paired), magnification 20 x or 30x complete in wooden box.
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The Overhead or writing projector is a
simple instrument for making the lecture and teaching more effective.
Transparencies upto 25x25 cms can be projected from its horizontal, flat
stage, on the wall or screen at a very short distance behind the
lecturer Serves both as a black board and projector combined. The
lecturer can now conntinuously face his audience. draw the pictures or
write as he talks, or even use ready made multicoloured transpare ncies
to make his lecture more dynamic. The lecturer writes with ordinary
grease /coloured pencils or fibre point pens on the transparent stage,
and the "WRITTEN" is sinultaneously projected on the wall
behind.
Applications : Diagramme / lIIustrtions Datums,
Tables Etc : Drawn or printed in multicolours and transparent
material can be instantly projected on the rear wall, and preserved
notes can be instantly emphasised. Working Models : Made of different coloured transparent and opaque materials can also be projected so as to demonstrate complex mechanisms and their actual working, like internal combustion engine, train of gears, lock mechanism, Air craft parts etc. Dynamic Demonstrations : Such as formation of magnetic field by using iron fillings on a transparent sheet and a magnet. crystal formation, or ripple tank demonstations in shallow plain glass tray or Experiments on CONVECTION CIRCULATION, chemicaI changes by heat and the effects of electric currents electolysiscan also be demonstrated. Structural Approach : By super-imposing 2-3 or even more colour transparencies step by step, and also check asimilation of the audience by quiz testing etc. Technical Specifications Body : All steel thick guage weided construction stove enamelled. Over all dimensions 35x55x75 cms. Opticals : A special wide Angle PERISCOPIC CONVEX projector lens of 90 mm. dia and 28.5x28.5 original Fresnels double condenser. Elevation Device : A surface ALUMINIZED and SILICON COATED, glass reflector is tiltable through a convenient knob positioned on the head elevating the screen image 5° to 30°. Focussing : By two large rotary knobs. via self Iocking cogwheel toothed racks. Adjustment is infinitely variable and absolutely, smooth. Illumination : Through a 1000 watt. medium prefocus, T-20 screw base projection lamp positioned at the optical axis of a highly silvered concave reflector. Cooling System : An efficient high speed motorised cooling fan. working noiselessly on exhaust. Operating Switches : Two special toggle switches, with symbols for the Fan and lamb. Safety Measures : For protection of lamp and fresnels lens etc. a Thermostat in Circuit starts the fan Automatically within 25 Seconds of switching on the lamp, andturns off, of its own only after the lamp is sufficiently cooled. Writing Scroll : A roll up scroll of transparent sheet10"x8 meters, built-in a metallic frame is attachable to the projector stage by 4 knurled Knobs. |
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