Redirecting you to http://www.quadibloc.com/math/sr03.htm#:~:text=The%20Darmstadt%20slide%20rule%2C%20with,on%20general%2Dpurpose%20slide%20rules.&text=This%20slide%20rule%20was%20made,rules%20in%201886%2C%20until%201938.