There are many inexpensive ones, but I bought 25 sheets that can make many combinations. If you are maintaining for many years, the thickness gauge has its own preference (shape / external size). This size is the most refreshing.
Although it purchased for the first time, there was a width than I expected, and it was unsuitable for measuring a fine place like a motorcycle. By the way, in Honda's 50cc 4-stroke vertical type, its use with a tappet was too bad and could not be used to measure points. Also, if there are only a few sheets used for measurement, it is a little troublesome that the number of sheets is large. Other than that I do not have any particular dissatisfaction, but I also felt that I should choose the one that suits my intended purpose.