frank_rinnFrank Rinn, inventor of the RESISTOGRAPH® and ARBOTOM® is world famous as an instructor on tree inspection and can help to make you a more expert arborist. Frank owns RINNTECH, a company that develops equipment for dendrochronology, tree and timber inspection since 1988.
Frank invented and developed different methods, machines, and computer programs for various applications in tree-ring analysis, dendrochronology, tree, and timber inspection, such as resistance drilling, sonic tree tomography & root-plate detection, as well as wood surface density analysis. He was granted several national and international patents and trademarks such as on high resolution and high-precision resistance drilling (RESISTOGRAPH®) and sonic tomography (ARBOTOM®). For his inventions and developments, he received several research and innovation awards (1989, 1992, 1997, 1998, 2004, and 2012). Besides managing RINNTECH (manufacturing, selling, and training), Frank also works as a court registered expert, inspecting trees and timber (structures). In addition, he lectures and has published several dozen papers on various topics.
Since 2001, he serves as voluntary Executive Director of ISA Germany and is on the ISA Tree-Risk Panel of Experts and contributes to the corresponding BMP. From 2011 to 2013 he served on the ISA Board of Directors.

IASHK 2010: Caring For Our Subtropical Trees

IASHK 2009: Tree Assessment & Preservation