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Introduction

This tutorial will guide you through reading an Ohaus 4-arm balance scale. Understanding how to use this scale is crucial in various fields such as chemistry, biology, and education for accurate measurements. We will break down the process into clear, actionable steps.

Step 1: Familiarize Yourself with the Scale

• Identify the main components of the Ohaus 4-arm scale:
  • Pan: Where the object to be weighed is placed.
  • Weights: Standard weights used to balance the scale.
  • Indicators: Markers that show the position of the balance.
• Ensure that the scale is placed on a stable, flat surface to avoid inaccurate readings.

Step 2: Zero the Scale

• Before taking measurements, make sure the scale is calibrated:
  • Check that no weights are on the pan.
  • Adjust the zero point if necessary using the calibration knob.
• Confirm that the indicator is aligned with the zero mark.

Step 3: Place the Object on the Scale

• Carefully place the object you want to weigh in the center of the pan.
• Avoid placing the object off-center, as this can lead to inaccurate measurements.

Step 4: Add Weights to Balance the Scale

• Gradually add standard weights to the opposing side of the scale:
  • Start with the largest weights and work your way down.
  • Use smaller weights for fine adjustments.
• Monitor the indicators to see if the scale is balanced.

Step 5: Read the Measurement

• Once the scale is balanced (the indicators are aligned), read the total weight:
  • Add up all the weights used on the opposing side.
• Note the measurement for your records.

Step 6: Record and Clean Up

• Write down the weight measurement for future reference.
• Remove the object and weights from the scale once you are finished.
• Clean the scale to maintain its accuracy and longevity.

Conclusion

Reading an Ohaus 4-arm balance scale is straightforward once you understand the components and process. Remember to always zero the scale before use and to balance it carefully with standard weights. Regular practice will increase your proficiency with this essential tool. For further learning, consider exploring more advanced techniques in weighing and calibration.