W45xL180mm, Japan
In today’s world, we often own only one comb and likely to be plastic, but for traditional Japanese coiffure there are many different types of comb (kushi) each having a different function. The sujitate comb is a special tool for straightening the side and the back hair used by the Kamiyui (geiko hairstylist).
And this is how the comb is actually used.
Mountain Folkcraft 