For those of you that prefer a manual extensometer, we now offer them. These are reliable and highly accurate machines that can start flashing a strobe when displacement has exceeded a pre-determined distance. The switch and design eliminate false alarms, and the design allows the cable to be lengthened easily without having to go to the pin. It is also made of lightweight aluminum, making moving around even easier. Give me a call to discuss your needs. More information here: Manual Extensometer.