英和和英

a display unit

a device for projecting illuminated images, called a projector

mnemonic device

a device

photographic equipment

an optical instrument, called spectroscope

an observation instrument, called microscope

drawing instruments

drawing instruments

an apparatus for displaying figures and diagrams called a graphics display

an ingenious device

an ingenious device

an ingenious device

an ingenious device

an apparatus showing directions

a lens or mirror used to concentrate light on an object, called a condenser

experimental apparatus

peripheral vision

an instrument designed to aid vision

analogue device

a device that offers a perspective view, called diorama

apparatus for observation and measurement of optical phenomena

a visual presentation

magnifier of the image of small objects

surveying instruments

a device that is used for visual education

a display unit that indicates the condition of an apparatus

a visible display

an innovative device

a scientific instrument that magnifies an image