Application:Defects caused during moulding process can be easily detected
Operation :A preform is held parallel to viewing field to study a colour pattern known as isochromaticfringe. This indicates magnitude of the stresses introduced during moulding process.and When perform is held 45 deg to viewing field a coloured pattern known as isoclinic is seen,this indicates direction of stresses.
Specifications:Viewing area = 200mm x 140mmDimensions of Unit =250mm x 250mm x 260mm. Lamp Source = 2 x 9 watts.220 V AC Single Phase / 110 V AC converter can be provided. A defect chart is provided to understand defects.