A professional who tests tensile strength and light value of samples of photocopy, blueprint, and other sensitised paper to ensure conformance to specifications, using duplicating machines and testing devices. Responsibilities include:

• Inserts paper sample in duplicating machine and starts machine.
• Removes developed print and compares sample with printed standard to detect variations in colour and clarity.
• Cuts paper sample into strips and clamps ends of strips in tensile strength measuring device.
• Turns handle of testing device until paper breaks.
• Records pounds of force required to break paper.
• Records test data in log.