Instruments used for measuring device colors include colorimeters and spectrophotometers. Reliability refers to how consistent a measuring device is. Consequently, we need to modify the temperature of the measuring device. Every gun is fitted with a radar Muzzle Velocity Measuring Device. PicoScope 6 converts a Linux PC into an oscilloscope, FFT spectrum analyser and measuring device. A potentiostat is a control and measuring device. It had also a distance measuring device called "D-49". A typical basic depth measuring device is the US AN/UQN-4A. Note that the alternate spelling "-metre" is never used when referring to a measuring device. To measure the actual impedance requires an antenna analyzer or other similar RF measuring device. The measuring device could be precise but not accurate. Other manufacturers, such as Beaumont TM, also supply this type of measuring device. The measurement often reflects the combined material and measuring device as the system. This mass measuring device can also work without a counterweight. One measuring device is placed on the body of the craft.