A graphometer is a surveying instrument. It is used to measure angles.
gauge
A musical instrument starting with the letter g is a guitar.
You adjust the measuring instrument :)
A pelvimeter is an instrument for measuring the pelvis.
Force meter is the instrument used in measuring force.
A measuring instrument that starts with micro is a micrometer.
Measuring cylinder
an instrument that has a reference during measurement
it depends on your instrument but if you play the clarinet like me there is one
precision instrument: caliper, micrometer non-precision measuring instrument: your hand, a piece of string
measuring jug! kettle
A protractor is used for drawing and measuring angles.
an instrument that has a reference during measurement