#scientific apparatus

• Auxanometer — A laboratory instrument or apparatus used for the precise measurement and dynamic tracking of the elongation rate of a plant's stem or organs, operating through the mechanical, optical, or digital amplification of the micrometric movements of growing plant tissues.
• Auxometer — A special optical instrument or apparatus used to determine and measure the magnifying power of a lens system, microscope, or telescope; a precision device engineered to measure the exit pupil diameter or the ratio between image size and actual object size.