• The studs are placed about 12 inches centre to centre .
• The distance of a planet from the Sun is measured centre to centre .
• The studs are placed about 12 inches centre to centre .
• The distance of a planet from the Sun is measured centre to centre .
Циммерман М., Веденеева К.. Русско-Английский научно-технический словарь переводчика. Russian-English scientific dictionary for translators. 2012