![]() Quartzlock Quartzlock (also known as HCD Research) is a company specializing in building off-air and atomic frequency referencing standards and calibration equipment. | |||
Founding Date | Founding Date 2006 | Founding Date 1961 | Founding Date 1986 |
Type | Type Private | Type Subsidiary | Type Subsidiary |
Tags | |||
Locations | Locations San Carlos, US HQ | Locations Burgess Hill, GB HQ | Locations Upper Saddle River, US HQ |
Employees | Employees 2 | Employees 5 | Employees 50 |
Operating ⚠ | |||
Enterprise Customers | Enterprise Customers 55 (Jul, 2021) | Enterprise Customers N/A | Enterprise Customers 72 (Oct, 2022) |

Quartzlock (also known as HCD Research) is a company specializing in building off-air and atomic frequency referencing standards and calibration equipment.
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