The SP-231N Series is a hydraulic weld force gauge that precisely measures electrode force — one of the critical conditions for achieving high-quality spot welds. The sensor uses a closed and sealed hydraulic system with built-in insulation to prevent current passage, even if weld current is applied unexpectedly. Features include a Maximum Value Pointer to capture peak force, Newton (N) unit display per international standards, and a compact, lightweight design for easy handling. Available in seven variations to match different force ranges, the SP-241N model offers a flexible U-bend neck for difficult access points.

The SP-270 Series is an advanced digital weld force gauge for measuring and analyzing electrode force in spot welding. Features a TFT color LCD displaying force data in graphical and digital formats, with bar meter for quick limit checking. USB connectivity enables data output to PC and flexible power options (dry cell or USB bus power) support both shop floor and office use. Supports up to 6 interchangeable sensors for different force ranges. Compact, portable, with auto power-off and language selection.

The SP-3510 is a welding current and voltage meter for all types of resistance welding, including single-phase AC, inverter, and condenser types. Using Spotron's high-performance toroidal coil, it measures from 1.00kA to 499kA across three ranges. The 3.5-inch touch-panel LCD displays data in four formats: Standard, Divisional, Waveform, and Graph. Supports seam weld measurement up to 3 minutes. Data saves to CPU automatically, with SD card, USB, and optional thermal printer output.

The SP-3288/SP-3290 is a portable welding meter for secondary current and welding time across all resistance welding types. Features Mekano's patented toroidal coil for precise detection, displaying RMS or peak current with welding time and conduction angle. Wide range up to 99.9kA and 999.5 cycles, built-in memory for 100 readings, and touch-key operation. Supports capacitor discharge measurement, designated time scope, and multi-pulse current applications.

The AMS-115/AMS-116 is a high-performance welding monitor with improved accuracy over previous models. Supports all current types with optional super low/high range (50A to 999kA) and frequencies up to 600Hz. Up to 32 condition setting patterns available. The AMS-116 model is specialized for seam welding with measurement up to 9000 cycles (180 sec). RS232C standard for PC communication, with extensive I/O options.

The AMS-1070E is a low resistance measuring device (micro-ohm meter) designed to detect increases in resistance caused by degradation of secondary or kickless cables in spot welding machines. It also identifies abnormalities such as insufficient bolting or oxidation of contact surfaces. High accuracy is ensured through a four-terminal system and specially designed micro-ohm circuits. Features up to 100 condition memory settings for upper limit resistance values, built-in rechargeable lead-acid battery, and data recording via SD card and USB.