10. Mirror M, to throw the light of the lamp on the vernier of the
scale:
[Illustration: FIGURE 36. LAURENT POLARISCOPE.]
11. Reading glass N, carried on the same radius as the mirror and used
to magnify and read the scale:
10. Mirror M, to throw the light of the lamp on the vernier of the
scale:
[Illustration: FIGURE 36. LAURENT POLARISCOPE.]
11. Reading glass N, carried on the same radius as the mirror and used
to magnify and read the scale: