I remember when I was teaching about growth and my students needed to measure the circumference of each other’s heads. I had to print a ruler to scale, so I made this template and printed it. I cut out the little decimeter rulers, and pasted them end to end on a sturdy strip of cardstock, to make a meter rule. If you need to print a ruler to scale, you’ll need a ruler template and this printing tip: always select ‘Print actual size’ in the printing settings. This template also has inch rulers which come in sets of half inch, quarter inch, one eighth inch, and one sixteenth inch increments.
My students each made their own meter rulers following my example. You can also use this template on TpT to make a printable meter ruler, 30 cm ruler, or printable inch ruler.