Year made: 1997
Manufacturer: ASHTECH
Manufacturing place (country): America
Function / Purpose:
Slope distance measurement 5 mm ± 1 PPM (length) / GPS calibration system standard

Characteristics:
The GPS receiver is to receive various satellite signals from the sound of the satellite and use various signal characteristics to obtain the distance between the satellite and the ground receiver and the vector between the ground receivers.

Source:The National Measurement Laboratory (NML)
NML has conducted intercomparsions with other countries to establish the traceability for industries and assure national measurement standards in harmonization with the international level.

20.40 cm X 18 cm X 7.20 cm

Standards