Gutter widths should relate to the body text leading value.
Indesign margin and gutter.
Because adobe indesign layout pages can include column guides as well as margin guides you can establish the gutter dimensions for a variety of layout options within one set of guides.
To achieve uniform spacing set your gutters to the same value as or a multiple of 1 5 or 2 for example the leading of the text.
Some people use gutter to describe the space between 2 columns other use it to describe the space between two pages.
Planning your indesign pages using margins and columns bookmachine this is an excerpt from nigel french s book indesign type.
Use margins and column guides to position content.
Use the align functions to align to dartboard.
0 5 inch margins become 0 625 inch from there drop your content and get to formatting.
Ungroup the object and select all the inner lines.
Open the pages panel window pages and select the thumbnails for the pages you wish to change.
To adjust column guides manually drag them horizontally to new positions producing unequal widths.
Enter values for top bottom left and right margins as well as the number of columns and the gutter the space between columns.
Gutters and full bleed.
Select format document margins and assign margins that include the additional bleed example.
Use the transform panel to determine the exact with and height of your outer margins.
210x297 less 10mm each side would be 190x277.
Assuming i guessed correctly are you trying to define the gutter width or gutter position.