A set square !
Rheostat is the name of an instrument used to vary electrical resistance.
Russian stringed musical instrument, with a triangular body and a long fretted neck fretted instrument. Usually there are three strings, which are generally plucked with a pick. The balalaika is made in various sizes, and several may be combined to make a band or orchestra.
The term "triangular prism" refers to a three-dimensional geometric shape that has two parallel triangular bases and three rectangular faces connecting the corresponding sides of the triangles. It does not have a specific name beyond "triangular prism," but it can be classified based on the type of triangles used for the bases (e.g., right triangular prism, equilateral triangular prism).
The triangle instrument does not have a specific country of origin as it has been used in various cultures around the world. It is a simple percussion instrument consisting of a metal rod bent into a triangular shape and played by striking it with a metal beater.
Another name for a triangular prism is a "triangular box." This term is often used informally to describe the three-dimensional geometric shape that has two triangular bases and three rectangular lateral faces. The shape is commonly encountered in various fields, including mathematics and design.
syringe
Timepieces.
Yes they used for a number of reasons for examplereligious eventsfestivalsmarriagefuneralsand banquet gatheringsThey used pipes, lyre, double reed instrument, and a old model of a harp.
a compass i think
Telescope.
Bongos.
Electronic microscope