measurement

Can anyone know how can I measure the image sizes in centimeters or inches? I mean is there any program that I can use to measure images? I'd like to appreciate your recommendation. Thanks

Anyone know if there is a comparison list anywhere that shows Cell size in mm Cell size in inches (imperial) Degree of coverage I have 7 inch diameter honeycombs labelled with cells in mm : 2 mm 3 mm 4 mm 6 mm but lots of discussions/shops etc difine honeycombs in terms of angles of degree...