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Chemistry Lab Techniques and Measurement Chemistry Lab Techniques and Measurement Experiment #1 Laboratory Techniques and Measurement PURPOSE The purpose of this laboratory is to become familiar with measurements, materials, calculations, conversions, and procedures used in chemistry lab. DATA Length Measurements Object Centimeters Millimeters Pencil 10.5 cm 105 mm Checkbook 14.2 cm 142 mm Wallet 11.7.