It is an ideal case of the Neoclassical style. Neoclassical design is a structural style delivered by the neoclassical development that started in the mid-eighteenth century. In its purest shape, it is a style chiefly got from the engineering of traditional artifact, the Vitruvian standards, and crafted by the Italian modeler Andrea Palladio.
Answer: 3=A, 4=B, 1=C, 2=D
Explanation:
this device is called the Oscilloscope.