For safety I colored the rows in my picture, but you can call the columns whatever you like:

Name:  Length_Access200_Filter.PNG
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It happens that we import data into the Access table from Excel and some of the columns which should be formatted with 4 character places, contain only data in 3 places.

Without scrolling to the bottom of the table, how can I filter out rows in a certain column which contain less or more characters then the needed number of characters?

In this case rows with 3 chars, and it should be with 4.