MICROMETER.

PLATE CCCCXV.

Fig. 1.

Geometric diagram Fig. 1 showing a circle with points A, B, C, D on the circumference and a horizontal diameter m-n. Two vertical lines are drawn inside the circle, with points p, q, r, s on them.

Fig. 3.

Geometric diagram Fig. 3 showing a circle with points Q, B, P, D on the circumference and a horizontal diameter Q-P. A vertical line passes through the center K. Below the circle, a lens system is shown with points H, G, E, F, and a base with points x, y, z.

Fig. 8.

Geometric diagram Fig. 8 showing a lens system with points W, E, G, F, B, A, S, P, R, Q, d, a, b, c. It includes a lens at the top and a cross-shaped lens below.

Fig. 9.

Geometric diagram Fig. 9 showing a lens system with points W, E, G, F, B, A, S, P, R, Q, d, a, b, c. It includes a lens at the top and a cross-shaped lens below.

Fig. 4.

Geometric diagram Fig. 4 showing a circle with points C, M, K, H, O, b, a, R, N, L.

Fig. 5.

Geometric diagram Fig. 5 showing a circle with points C, N, H, R, Q, P, B, A, e, v, v.

Fig. 6.

Geometric diagram Fig. 6 showing a circle with points C, I, H, R, v, v, T.

Fig. 10.

Diagram Fig. 10 showing a mechanical component with points C, V, I, G, H, A, R, a, b, d, h.

Fig. 2.

Geometric diagram Fig. 2 showing a circle with points C, B, A, F, G, H, R, a, b, c, d.

Fig. 7.

Geometric diagram Fig. 7 showing a circle with points C, H, R, v, v, e.

Fig. 11.

Detailed illustration of a micrometer instrument, showing its cylindrical body, adjustment screws, and a small tool labeled S.

E. Mitchell, sculp.