The first time you soldered up a surface mount component you may have been surprised "these are really small parts!" and there's dozens of different names too! QFN, TDFN, SOIC, SOP, J-Lead, what do they mean and how can you tell how big they are? Now you can have a reference board at your fingertips..
This steel ruler has 11 functions making it a handy tool for Makers.
Size: 70 x 45 x 2 mm
West Germany stainless ..