RKM code
Appearance
The british standard 1852 is a standard coding method for specifying resistance values, with R for Ohms, M for Megaohms, K for Kiloohms. Any number comes after the letter means it's a decimal point. For example, 5K4 means 5.4 kilohms, 5R2213 means 5.2213 ohms, 9M means 9 megaohms.