Voltage meter - ABS construction for durable, smooth operation and precise voltage readings to support consistent prints. Tension gauge - Helps set optimal filament tension to reduce defects and improve print accuracy and repeatability. 3D printer clamping gauge with digital screen - Real time voltage adjustments with a clear digital display; simplifies setup and helps optimize print quality. 3D printer clamping gauge with improved measuring head and metal probe - Upgraded measuring head and metal probe enable fast, portable, and precise measurements for on demand checks. Use scenarios - Initial printer setup and calibration: use the tension gauge and clamp gauge to dial in voltage and tension for clean starts and stable layers. - Multi material tuning: switch between materials like PLA, ABS, and PETG and adjust settings to maintain consistent quality. - On site or workshop testing: portable gauges allow quick, accurate measurements across multiple printers for efficient maintenance and production.