Periscope that allows the view of an obstructed field above or below the level of viewer.
It is a Z shaped tube with mounted mirrors on both sides at 45° facing each other.
Periscope, (Wooden).
Brass dial head 40 mm diameter divided and marked in 100 divisions, vertical scale 10-0-10 mm, fitted on heavy brass disc, with 3 pointed legs, distance between legs 40 mm.
To explore light reflection and refraction properties of concave and convex mirrors, laws of reflection, image formation, the effects of surface curvature on reflection, spherical aberration etc.
Each mirror is securely held on a plastic base, diameter of the mirror is 95mm approx.
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