The nVent GARDNER BENDER GMT-318 is a multifunctional analog multimeter designed for the homeowner, hobbyist, or professional seeking a pocket-sized tool for electrical and electronic measurements. Capable of measuring 6 essential functions across 14 ranges, this unit is the ideal choice for testing household batteries for charge levels, troubleshooting low voltage circuits, and identifying breaks in electrical cords or fuses. The GMT-318 features an easy-to-read, color-coded analog display with a mirror scale to significantly reduce parallax errors. For precision diagnostics, the unit includes a built-in Zero Ohms adjustment dial, allowing you to calibrate the needle prior to resistance testing. This ensures that every reading, from checking wall receptacles for proper grounding to testing 1.5V and 9V batteries, is as accurate as possible. Safety is paramount; the unit is agency approved and incorporates fuse overload protection circuitry to protect the user. It measures AC/DC voltage up to 500V and includes replaceable test leads. Please note that the decibel feature is intended for transistor gain measurement in electronic circuits and should not be confused with audio decibels. Compact, rugged, and reliable, the GMT-318 is an excellent all-around electrical tester.

• VERSATILE 6-FUNCTION TESTING – Professional-grade analog multimeter designed for homeowners and hobbyists to measure AC/DC Voltage up to 500V, DC Current, Resistance, Decibels, and common 1.5V/9V household batteries.
• 14 RANGE SELECTION – Features a 15-position manual rotary dial to easily select between 14 different ranges, providing accurate control for troubleshooting electrical cords, wall receptacles, fuses, and low voltage circuits.
• ZERO OHMS ADJUSTMENT DIAL – Equipped with a built-in Zero Ohms adjustment dial, allowing users to reset the needle prior to resistance testing to ensure peak accuracy and perform essential internal battery test functions.
• REPLACEABLE TEST LEADS INCLUDED – Comes complete with high-quality, replaceable test leads, ensuring you have the necessary equipment to begin electrical diagnostics right out of the box.
• PACKAGING NOTICE – This product may arrive with packaging labeled Gardner Bender as branding transitions to nVent GARDNER BENDER. Product design, specifications, and quality remain unchanged during this rollout.
• AGENCY APPROVED SAFETY – Designed with safety as a priority, this unit is agency approved (cETL/CE) and incorporates fuse overload protection circuitry to protect both the user and the device during various applications.
• REDUCED PARALLAX ERROR – Features an easy-to-read, color-coded analog display with an integrated mirror scale specifically designed to reduce parallax errors for more consistent and reliable readings.
• COMPACT & PORTABLE DESIGN – The small, lightweight, and rugged construction makes this pocket-sized meter the perfect addition to any DIY toolkit for testing light strings, switches, and household appliances.
• BATTERY & FUSE PROTECTED – Engineered for durability with internal fuse and diode protection, ensuring the device remains functional even during common household electrical troubleshooting tasks.