This is especially critical for your line performance qualification test. A good test jig like the one shown in Figure 15 should be used to perform line transient test on demanding regulators. Example ...

TEST PRESSURE: Some digital pressure gauges have a test pressure function, which use a temperature probe to compensate for the change in temperature during the test. (Courtesy of Joe Marchese) July 18 ...

Each needle holder has a bit of flex which allows it to maintain downward pressure for a positive connection. Making one-off tools and jigs is arguably one of the best applications for 3D printing ...