Sales Contact:
Ben Cosstick
Vice President of Global Sales
(636) 223-4448


2484 West Clay Street
Saint Charles Missouri 63301
United States

About Us:
Masterclock designs and manufactures a variety of precise timekeeping products to keep both facilities and people synchronized. Since 1994 our portfolio of master clocks, time servers, IRIG generators, count controllers, digital displays, analog clocks, and PC cards have been trusted to support mission critical applications. Our products do everything from ensuring television studios make smooth programming transitions to providing precise counts for spacecraft launch operations.

By maintaining a true U.S. manufacturing presence in St. Louis, MO, Masterclock can control quality processes while taking advantage of internal technical knowledge to deliver hybrid solutions that combine Masterclock products with complimentary equipment. This solutions-oriented approach broadens our ability to serve our customers and allows us to be a trusted, single source for all things timing related.

Masterclock can be found around the globe in time-sensitive environments such as research facilities, broadcasting stations, data centers, financial institutions, airports, and rocket-launch command centers. We have a worldwide distribution network supporting customers in over 100 countries on 6 continents.