If you have questions about our products, Fill out the form below and we will answer any questions you have. Tips: Fields marked with*are required. Bently Nevada 3500/42M 135489-03 Seismic Monitor Module Introduction The Bently Nevada 3500/42M (Part No. 135489-03) is a high-precision monitoring module designed for critical machinery protection systems. It combines shaft displacement and seismic vibration monitoring in a single, compact modu *Your Name: *Your Email: *Your Name: *Vdcode: Submit