- stereometric problem
- мат.стереометрическая задача
English-Russian scientific dictionary. 2008.
English-Russian scientific dictionary. 2008.
Sector (instrument) — The sector, also known as a proportional compass or military compass, was a major calculating instrument in use from the end of the sixteenth century until the nineteenth century. It is an instrument consisting of two rulers of equal length which … Wikipedia
Barometer — Schematic drawing of a simple mercury barometer with vertical mercury column and reservoir at base … Wikipedia