Mnemonic Device for Micrometer Screw Gauge

While performing experiment we can easily know that whether screw gauge opens or closes on rotating.

But the problem arises when we are giving written test like structured questions and MCQs. So I have developed an easy mnemonic that can be helpful to many. 

Just look here:

Closing micrometer screw gauge

Now it is easy.

When we rotate clockwise it is closed and when we rotate anticlockwise it is opened.

So we can solve questions with the help of this mnemonics in an easier way.