Abstract: Photoelectric autocollimator is a kind of small angle measuring instrument of high accuracy. For the increasing demand of the measurement accuracy, each link to affect the precision of ...

Figure 1. These emeralds from Musakashi, Zambia, range from 0.57 to 4.85 ct. The rough samples were polished with one window on each. The faceted sample measures 6.29 × 5.35 × 3.53 mm and weighs 0.97 ...

The modules in this file allows you to attach one object to another by making one object the child of another object. You can place the child object in relation to its parent object and control the ...

The Vertices'N'Faces structure (VNF) holds the data used by polyhedron() to construct objects: a vertex list and a list of faces. This library makes it easier to construct polyhedra by providing ...