How to prepare a scaled map sheet: paper, scale, grid, title block and printing at 100%

On screen everything zooms; on paper the scale only exists if you set it up correctly.

Scale first, then paper

The scale tells you how much ground 1 mm on paper stands for: at 1:1000, 1 mm is 1 m. The paper size decides how much area fits at that scale. In the ISO 216 A series, A4 is 210 × 297 mm, A3 297 × 420 mm, A2 420 × 594 mm, A1 594 × 841 mm and A0 841 × 1189 mm. A landscape A3 sheet at 1:1000 shows at most about 420 × 297 m, before margins and the title block are taken off; the same area at 1:500 needs A1. The order matters: first choose the scale the job needs, then the paper that holds the area at that scale. Shrinking the scale to squeeze the data onto the sheet makes the detail unreadable.

What paper can show: the 0.2 mm rule

Line width and the eye cannot separate differences below about 0.2 mm on paper; Türkiye's Large-Scale Map and Map Information Production Regulation likewise requires the plotted position of points to be better than 0.2 mm. That is about 20 cm at 1:1000, 10 cm at 1:500 and 40 cm at 1:2000. So a site detail measured to 5 cm cannot be told apart on a 1:1000 sheet anyway; if that detail matters, choose a larger scale. The same arithmetic applies to background imagery: satellite imagery with 30 cm pixels becomes 0.3 mm squares on paper at 1:1000 and looks blurred.

The grid and the margin information

A coordinate grid lets you check the sheet's scale and position in every square. On official sheets the regulation draws the grid every 100 mm on paper, with the intersections marked as 5 mm crosses, and writes the X values in the left margin and the Y values in the bottom margin. That spacing is 100 m at 1:1000 and 50 m at 1:500. The same logic works for working prints: a grid that is too dense smothers the map, and one that is too sparse makes coordinates hard to read. The margin should say which coordinate system the grid is in; the regulation also asks for the ellipsoid, datum, reference epoch and projection to be written at the bottom left of the sheet.

The title block: the print's identity

What turns a print into a survey document is the title block. At a minimum it should state: the job or work area, the scale, the paper size, the coordinate system (datum and zone), the grid spacing, the date, who prepared it and, where needed, a sheet number and a note. The north arrow should say whether it shows grid north or true north: at the edge of a TM zone the angle between them (the meridian convergence) approaches one degree at Türkiye's latitudes. A scale bar keeps the sheet measurable even if it is enlarged or reduced. A legend explains the colours and symbols, and a location map shows where the sheet falls in the wider area.

Text size and legibility

Think about text sizes in millimetres, not screen pixels. On official sheets the regulation writes the margin coordinates 2.5 mm high, neighbouring sheet numbers 3 mm and the sheet number 7 mm; those values are a good starting point for working prints too. The most common problems are labels overlapping, labels hidden under the title block and labels running off the frame. Before printing, preview the whole sheet at actual size; text you can read on screen may not be readable on paper.

Printing at 100% and the official sheet

A scaled PDF loses its scale if "fit to page" is on in the print dialog: the printer shrinks the drawing by a few per cent to fit its margins. Print at 100% with fitting turned off, then measure the scale bar and one grid square with a ruler. PDF suits sharing and printing; SVG suits editing in a vector drawing program. One last distinction: in Türkiye, official map sheets are produced at 70 × 90 cm under the regulation, signed by the control engineer and approved by the administration. A scaled print from software, however neat, is a working print; it does not replace an official sheet.

Frequently asked questions

Related: Sheet and grid delivery · Measurement report · Placing a scanned sheet · MapLab Survey