syringe
Rheostat is the name of an instrument used to vary electrical resistance.
The Visayas are islands in the Philippines. As to 'instrument' - you need to give more information? Musical instrument? Surveying instrument? Or something else?
Timepieces.
a compass i think
A set square !
Telescope.
Bongos.
Electronic microscope
1940
The instrument used to measure the volumes of liquids are many as follows ..they are : beaker ,burette,pipette,etc.
steel guitar
CLOCK