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Graticule slides

A graticule slide is a microscope slide that contains a mm grid of lines. They allow the size of objects seen under magnification to be measured. A simple version of a graticule slide can be made by anyone with access to a drawing program. Something as simple as the drawing tools that come with Microsoft Word will do.Instructions for using the drawing tools of Word follow in italics

  • In Word, go to view, toolbars. and make sure that 'Drawing' is ticked. Then select a line from the drawing tool pallet. [ it is a picture of a line next to 'AutoShapes']
  • Draw a single straight, vertical line. Copy and paste the line 9 times.
  • Use the arrow keys on the keyboard to line up the lines so that you have 10 evenly spaced lines.
  • Select all ten lines at once by holding down the shift key and left clicking on each line in turn.
  • Go to Draw then Group, to group all ten lines into a single object.
  • Copy then paste the lines then go to 'Draw' then 'Rotate or flip' and rotate by 90°
  • Line up the vertical and horizontal lines and by using the corner tabs resize them until there is a perfect grid without any overhangs. Then select both sets of lines and group them together into one object.You should now have a square grid.

You could just copy the grid here, but this grid has been rasterized from the vector image and so the quality will be much lower.

Once there is a suitable grid on the computer, a test print should be produced. The size of the printed square should be measured and the grid should be resized until a cm2 grid id printed. This grid can now be printed on photocopiable OHP sheets.

The OHP sheets can be glued to a glass slide with clear nail varnish.



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