Check the listing for details. Kern Swiss Precision Chromed Drafting Tool Set Serie B21 with Collectible Case. Condition: Used. Listed at 105.50 USD. These were purchased for me in the spring of 1972 when I was considering the study of architecture. The fall of 1973 I went in to Medicine instead. These Kern drafting tools are amazingly precise though I didn't give much use here it is 50 years later. The Kern Swiss Precision Chromed Drafting Tool Set Serie B21 is a high-quality engineering tool set designed for precision drafting tasks. Included in the set is a collectible case, making it not only functional but also a stylish and unique addition to any workspace. With the renowned Kern brand, this set promises reliability and accuracy in engineering and drafting projects. Ideal for professionals in the field of science and medicine, this set is a must-have for anyone looking to enhance their drafting capabilities.