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Application:

Defects caused during moulding process can be easily detected using this equipment.

Operation :

A preform is held parallel  to viewing field to study a colour pattern known as isochromatic fringe.

This indicates magnitude of the stresses introduced during moulding process.

When perform is held 45 deg to viewing field a coloured pattern known as isoclinic is seen,

this indicates direction of stresses.

Specifications:

Economy Model -

Viewing area = 200mm x 140mm

White Lamp Source.

Large Area Model

Viewing area - 325 x 325 mm

White Lamp Source.

Large Area model with two light Sources

Viewing area - 325 x 325 mm

White lamp source + Low Pressure Sodium Lamp Source ( Yellow colour)

Custom sizes available on request.

220 V AC Single Phase / 110 V AC converter can be provided.

A defect chart is provided to understand defects.

​​​​​​Preform Polariser / Polariscope