This Pendulum CNT-81 Timer Counter Analyzer is the perfect tool for those in need of precise measurements in their work. With an option for 20 inputs and a frequency capability of 2.7 Ghz, this calibrator is sure to deliver accurate results every time. Additionally, it comes equipped with a 40 OCXO for added precision. Ideal for use in business and industrial settings, this calibrator is a reliable and indispensable tool for any professional. Whether you need to measure frequency, time, or any other parameter, this Pendulum CNT-81 has got you covered. It is the perfect way to ensure that your work is always up to standard and meets the highest of expectations.