Peter's tweezers are very useful in lampwork bead making. I use them mostly to mark a bead with little dents that are exactly 180 degrees apart so I can put dots in exact registration. Then make two more marks exactly 90 degrees from the first and you have the basic layout for a lot of different patterns. Once you have four dots on at exactly the four quadrants it is easy to apply many more in the precise locations using the original four dots an guides.