Synecdoche: a substitution of a part of something for the whole or the whole for a part.
Mechanical device is a try square
What poetic device is used in that firts two lines?
It seems you have omitted the lines you are referring to. Please provide the lines so I can identify the literary device being used.
satelite
eraser shield
personification
The purpose of a device used to remove air from water lines is to ensure proper water flow and pressure by eliminating air pockets that can disrupt the flow of water.
The keyword mnemonic device used to remember the order of music notes on the lines of the treble clef staff is "Every Good Boy Does Fine."
IRQ
alliteration
IRQ
slant rhyme