Catalogue No.
1531
Laurent Half Shade Polarimeter Sph-8
We employ the Half Shade Principal for detecting the extinction point.
| Circular scale | Graduated from 0 to 360˚ (On ne quality Acrylic sheet ) |
|---|---|
| Dimension of the Circular scale | (Dia. 100mm x Thickness 4mm) |
| Vernier scale | Graduated 0 to 10 ( 10 Divisions of Vernier Scale concides with 9 Divisions of Main scale.) |
| Telescope Magnication | 4.5 X |
| Least count | 6 minutes |
| Prism system | Made from Imported Mica sheet (Half shade principal) |
| Polarimeter tube | Borosilicate Glass Tube with Bulb at centre (Dia 13mm x length 200mm) |
| Adjustable stand | Heavy cast iron painted stand |
We employ the Half Shade Principal for detecting the extinction point.The stationery 4” (100mm) acrylic circular scale (graduated
for 0 to 360˚) is read from the front by means of a magnifying lens and a vernier , which rotate with the analyser and are controlled by means of circular knob located at the right side of eye piece. A borosilicate glass tube of 200mm long is enclosed in a circular
aluminum tube with top door for access and exclusion of external light . Supplied on the heavy adjustable stand , packed in cardboard box with working manual