standard ruler

Questions

What does standard ruler mean?

Any astronomical object of known diameter whose distance can then be calculated from the angle it subtends

How to pronounce standard ruler

1. Open the pronunciation page — Open the Speakur entry for “standard ruler”.
2. Read the phonetic spelling — Read the IPA spelling () so you know which sounds to aim for.
3. Play the audio — Click Play to hear reference audio for “standard ruler”.
4. Repeat and practice — Say “standard ruler” aloud, matching stress and vowels until it feels natural.