Secondary Science Kit ("S.S.K.") Wire Gauze
 100mm x 100mm with frame
As per sample
No. Off-1
Thick black paper
sheet
 Black chart paper A4 size
As per sample
No. Off-1
Tapping Key
 Plastic base As per sample
As per sample
No. Off-1
Optical bench with plastic scale
 Two plastic scales of
dimentions400+400mm x 27mm x 6mm,thick wooden/plastic scale. Marking of centimeter and milimeteron top on both sides, .thetwo parts to be joined with plastic
strip. As per sample
As per sample
No. Off-1
Lens holder
 Dia 35mm Perspex rod over all height
55mm with 3.5mm x 10mm eliptic depth slot & 6mm wide x 6mm elliptical depth slot. Bottom end slot 5mm x 2.7mm for sliding on wooden scale.As per sample
As per sample
No. Off-1
Screen holder
 Perspex piece over all height 21.5mm
approx round bottom 47.5 mm slot 27.5 x 5mm depth,width of piece 25.5 mm top slit straight 8mm deep &3mm wide. As per
sample
As per sample
No. Off-1
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