Ryobi. Ideal for plumbing, HVAC work, and other applications, the Tek4 Digital Inspection Scope helps users investigate what’s going on inside walls and systems before making home performance upgrades. Features include digital zoom and 2x magnification, a high-resolution color LCD screen, a four-stage LED light, and five hours of continuous runtime. The 3-foot-long camera cable can be submersed in water for up to 30 minutes, and the on-screen image rotates 180 degrees to adjust the operator’s perspective. 800.525.2579. www.ryobi.com.