An Analogue Bathroom Weighing Scale is a mechanical Class I medical device (for health monitoring) using a precision spring and lever system to measure body weight without batteries or electronics. Features include enameled steel, stainless steel, or ABS plastic platform (25-30 cm square), large circular dial (10-15 cm diameter) with clear numerals and pointer, zero adjustment knob for calibration before each use, weight capacity 120-180 kg (265-400 lbs) standard (heavy-duty models to 250 kg/550 lbs), and graduation 0.5 kg or 1 lb increments with accuracy ±0.5-1 kg. Primary clinical applications include home weight monitoring for patients who prefer non-electronic devices, chronic disease management in resource-limited settings (heart failure, CKD), geriatric and low-vision patient weighing (large, clear dial), bariatric patient monitoring (higher weight capacities), pediatric growth monitoring in home settings, pregnancy weight tracking, and post-hospitalization transition monitoring. Critical safety considerations include verifying zero adjustment before each use, placement on hard level surface (not carpet), staying within weight capacity, reading at eye level to avoid parallax error, and recognizing that spring fatigue over years may affect accuracy. Essential non-electronic alternative for patients needing simple, reliable, battery-free weight monitoring.