Analogue Weighing Scale With height
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An Analogue Weighing Scale With height is a Class I medical device combining a mechanical beam scale (balance beam with sliding poises, accuracy ±0.1 kg, capacity 140-300 kg) with an integrated telescoping or folding height rod (range 60-200 cm, graduation 1 mm) for comprehensive anthropometric assessment without batteries or electronics. Features include heavy-gauge steel platform (50-70 cm × 40-50 cm) with non-slip surface, sliding counterweights (large for increments, small for fine measurement), zero adjustment mechanism, locking casters for mobility, and durable enamel or powder-coated finish. Primary clinical applications include comprehensive anthropometric assessment in resource-limited clinics, pediatric growth monitoring in community health centers, adult obesity screening and BMI calculation, geriatric nutritional assessment in long-term care, preoperative assessment in ambulatory surgery centers, school health screening programs, and developing world/humanitarian aid settings. Critical safety considerations include verifying zero balance before each use, locking casters before patient steps on, ensuring patient stands still without support, providing step assistance for mobility-impaired patients, and cleaning platform and height rod between patients. Essential durable, battery-free equipment for comprehensive weight and height measurement in clinical settings.
Description
Analogue Weighing Scale With height
PRIMARY CLINICAL & DIAGNOSTIC USES
1. Comprehensive Anthropometric Assessment in Resource-Limited Clinics:
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Primary Use: Provides both weight and height measurement in a single mechanical device, enabling calculation of Body Mass Index (BMI) for nutritional assessment, growth monitoring, and obesity screening in primary care settings where digital alternatives are unavailable or unaffordable.
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How it helps: Brings complete nutritional assessment capability to clinics with limited resources, allowing healthcare workers to calculate BMI and identify malnutrition or obesity without relying on electricity or expensive digital equipment.
2. Pediatric Growth Monitoring in Community Health Centers:
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Primary Use: Allows healthcare workers to measure both weight and height of children during well-child visits, growth monitoring programs, and malnutrition screening, with the mechanical design requiring no batteries or calibration beyond zero adjustment.
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How it helps: Tracks children’s growth reliably over time, even in the most basic community health centers, ensuring that no child falls through the cracks due to lack of equipment.
3. Adult Obesity Screening and BMI Calculation:
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Primary Use: Enables clinicians to obtain accurate weight and height measurements for BMI calculation to classify patients as underweight, normal weight, overweight, or obese, guiding interventions for weight-related health conditions.
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How it helps: Provides doctors with the essential data needed to identify patients at risk from excess weight, guiding conversations about diet, exercise, and health that can prevent diabetes, heart disease, and other obesity-related conditions.
4. Geriatric Nutritional Assessment in Long-Term Care:
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Primary Use: Provides regular monitoring of weight and height (or height loss) in elderly residents to detect malnutrition, sarcopenia, or osteoporosis-related height loss, with the simple mechanical operation suitable for use by care staff.
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How it helps: Protects elderly residents by catching dangerous weight loss early and tracking the height loss that signals weakening bones, allowing for timely intervention before falls and fractures occur.
5. Preoperative Assessment in Ambulatory Surgery Centers:
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Primary Use: Offers reliable weight and height measurement for anesthesia dosing and surgical planning in settings where digital scales may not be available or where mechanical reliability is preferred.
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How it helps: Ensures surgical patients receive the correct anesthesia doses and that surgical teams have all the information they need, even in facilities that rely on mechanical rather than digital equipment.
6. School Health Screening Programs:
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Primary Use: Enables school nurses to conduct annual height and weight assessments for growth monitoring, obesity screening, and identification of children requiring further evaluation, with durable mechanical construction standing up to high-volume use.
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How it helps: Supports the health of school-aged children by providing reliable, durable equipment that can withstand the demands of screening hundreds of students each year.
7. Developing World and Humanitarian Aid Settings:
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Primary Use: Provides essential anthropometric measurement capability in field clinics, refugee camps, and international aid programs where battery availability is limited, technical support is minimal, and equipment must be durable and easily maintainable.
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How it helps: Brings life-saving nutritional screening to the world’s most vulnerable populations, from refugee camps to disaster zones, with equipment that works without electricity and can be repaired with basic tools.
SECONDARY & SUPPORTIVE USES
1. Fitness and Wellness Programs in Community Centers: Used in community fitness programs to track participant weight and height for initial assessment and progress monitoring, supporting community health initiatives.
2. Nutritional Research Studies: Provides reliable anthropometric data in field research studies where digital equipment may not be practical or available, contributing to scientific understanding of nutrition.
3. Military and Corps Basic Training: Used in military processing stations and basic training facilities for initial physical assessments of recruits, supporting armed forces health programs.
4. Correctional Facility Health Screening: Provides durable, tamper-resistant measurement for intake health assessments in correctional settings, ensuring new arrivals receive appropriate care.
5. Disaster Response and Temporary Clinics: Essential equipment for rapid deployment medical teams establishing temporary clinics in disaster zones, bringing health monitoring to crisis settings.
6. Veterinary Use for Large Animal Assessment: Adapted for weighing and measuring large animals in field settings where portability and durability are essential, extending care to livestock and working animals.
7. Heritage and Historical Preservation: Maintained in historic medical facilities and museums for educational demonstrations of historical medical practice, preserving the history of healthcare.
KEY PRODUCT FEATURES
1. BASIC IDENTIFICATION ATTRIBUTES
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Device Type: Combined mechanical beam scale with integrated height rod for simultaneous weight and height measurement.
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Common Names: Physician Scale, Beam Scale, Mechanical Height and Weight Scale, Balance Beam Scale, Clinic Scale.
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Components:
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Base Platform: Heavy-duty metal platform with non-slip surface.
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Beam Assembly: Horizontal beam with sliding counterweights (poises) for weight measurement.
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Height Rod: Telescoping or folding metal rod with measuring scale.
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Balance Indicator: Pointer that aligns when the beam is balanced.
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Weight Poises: Large counterweight for 50 lb/25 kg increments; small poise for fractional measurements.
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Zero Adjustment: Screw or knob to calibrate empty scale to zero.
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Height Scale: Calibrated in cm and/or inches on telescoping rod.
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Weight Capacity: 140-200 kg (300-440 lbs) standard; heavy-duty models available to 250-300 kg (550-660 lbs).
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Weight Graduation: 0.1 kg or 0.2 lb (small poise); 5-10 kg (large poise).
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Height Range: 60-200 cm (24-78 inches) typical.
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Height Graduation: 1 mm or 0.5 cm increments.
2. TECHNICAL & PERFORMANCE PROPERTIES
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Weight Measurement Mechanism: Balance beam principle; weight determined by positioning poises until beam balances.
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Weight Accuracy: ±0.1 kg (±0.2 lb) with proper calibration; inherently accurate when balanced.
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Weight Repeatability: Highly consistent; no electronic drift or calibration degradation.
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Height Measurement: Mechanical rod with positive lock; vertical or horizontal reading.
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Height Accuracy: ±2-3 mm with proper technique.
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No Power Required: Operates indefinitely without batteries or electricity.
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Tare Function: Can be zeroed with blankets or pads for infant weighing (some models).
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Durability: Heavy-duty construction withstands years of heavy use; minimal maintenance required.
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Transport: Wheels on base for mobility; locking casters for stability.
3. PHYSICAL & OPERATIONAL PROPERTIES
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Base Platform Dimensions: 50-70 cm × 40-50 cm (20-28 × 16-20 inches).
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Overall Height: 120-150 cm (48-60 inches) with height rod extended.
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Platform Height: 10-15 cm (4-6 inches) step-up.
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Weight: 25-45 kg (55-100 lbs) depending on construction.
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Material: Heavy-gauge steel, cast iron, or aluminum construction; enamel or powder-coated finish.
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Finish: Chip-resistant enamel or powder coat; easy to clean.
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Non-Slip Platform: Textured or rubber-covered surface.
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Height Rod Material: Chrome-plated or painted steel; telescoping or folding design.
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Casters: 2-4 wheels for mobility; locking front casters.
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Footpads: Leveling feet for uneven floors.
4. SAFETY & COMPLIANCE ATTRIBUTES
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Regulatory Status: Class I medical device when marketed for clinical use.
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Accuracy Standards: Meets ASTM E898 or OIML Class III requirements for clinical scales.
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Weight Capacity: Clearly marked; overload may damage the mechanism.
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Stability: Wide base and locking casters prevent tipping.
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Non-Slip Surface: Textured platform prevents falls.
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Step Height: Reasonable step-up height; handrail available on some models.
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Biocompatibility: Platform surface meets skin contact standards.
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No Electrical Components: No shock or fire hazard; safe in all environments.
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Corrosion Resistance: Enamel or powder-coat finish resists rust.
5. STORAGE & HANDLING ATTRIBUTES
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Storage: Store assembled in a clean, dry environment; protect from moisture.
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Cleaning: Wipe platform, beam, and height rod with EPA-registered hospital disinfectant. Do not immerse.
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Zero Calibration: Before each use, verify beam balances with no weight; adjust zero screw if needed.
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Poise Maintenance: Keep poises clean; ensure smooth sliding without binding.
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Height Rod Care: Extend and retract gently; clean measuring surface.
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Inspection: Check beam alignment, poise movement, height rod integrity, and casters before each use.
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Calibration Verification: Annually verify accuracy with certified test weights.
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Leveling: Adjust leveling feet for stable, wobble-free operation.
6. LABORATORY & CLINICAL APPLICATIONS
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Primary Application: Combined weight and height measurement for comprehensive anthropometric assessment in primary care, pediatric clinics, community health centers, long-term care facilities, and resource-limited settings.
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Measurement Guidelines (Weight):
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Zero scale before each use.
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The patient stands centered on the platform without support.
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Slide large poise to estimated weight; adjust small poise until beam balances.
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Read weight at poise positions.
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Measurement Guidelines (Height):
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The patient stands erect, heels together, back to height rod.
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Heels, buttocks, and shoulders touching rod.
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Head in the Frankfort plane (eyes and ears level).
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Lower headpiece firmly on crown; read measurement.
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BMI Calculation: Weight (kg) / Height (m)²; classify per WHO guidelines.
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Clinical Significance:
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BMI <18.5: Underweight.
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BMI 18.5-24.9: Normal.
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BMI 25-29.9: Overweight.
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BMI ≥30: Obese.
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Limitations: Heavy and non-portable; requires physical effort to move; step-up height may be difficult for some patients.
SAFETY HANDLING PRECAUTIONS
1. SAFETY PRECAUTIONS
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Stability Check: Ensure scale on level surface with casters locked before patient steps on.
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Step Assistance: Provide arm or handrail for patients with mobility impairment; step height may be challenging.
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Weight Capacity: Do not exceed maximum weight capacity; beam damage may occur.
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Height Rod Caution: Extend height rod gently; avoid sudden extension that may hit the patient or ceiling.
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Child Safety: Supervise children; prevent climbing on scale.
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Poise Handling: Ensure poises securely positioned; loose poise may fall during use.
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Zero Check: Always verify zero balance before each use; inaccurate zero guarantees inaccurate weight.
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Patient Positioning: Patient must stand still without support for accurate weight; holding height rod invalidates reading.
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Infection Control: Clean platform and height rod between each patient.
2. FIRST AID MEASURES
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Fall from Scale: Assess for injury; document incident; evaluate need for additional safety measures.
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Height Rod Impact: If height rod strikes patient, assess for injury; use more gently next measurement.
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Poise Drop: If poise falls during use, assess for foot injury; ensure secure replacement.
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Inaccurate Readings Suspected: Verify calibration with known test weight; adjust or service as needed.
3. FIRE FIGHTING MEASURES
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Flammability: Metal components non-combustible; paint/finish may be combustible.
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Extinguishing Media: Use water, foam, CO₂, or dry chemical as appropriate for surrounding fire.

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