Quartz Crystal and Timing Devices, ‎Crystal oscillator circuits , light refraction

 ABM7 Series 10 MHz ±20 ppm 18 pF -40 to +85 °C Mini Microprocessor Crystal

https://www.futureelectronics.com/p/electromechanical--timing-devices--crystals/abm7-10-000mhz-d2y-t-abracon-3001050