Document ID: chunk:federal_register_of_legislation:F2024L01024:front:0:p110
Version: federal_register_of_legislation:F2024L01024
Segment Type: other
Provision Reference: 
Character Range: 309393–312101

for "isostatic presses" specified by 2B204.a.
Technical Note:
In 2B204 the inside chamber dimension is that of the chamber in which both the working temperature and the working pressure are achieved and does not include fixtures. That dimension will be the smaller of either the inside diameter of the pressure chamber or the inside diameter of the insulated furnace chamber, depending on which of the two chambers is located inside the other.
2. B. 206. Dimensional inspection machines, instruments or systems, other than those specified by 2B006, as follows:
a. Computer controlled or "numerically controlled" Coordinate Measuring Machines (CMM) having either of the following characteristics:
1. Having only two axes and having a maximum permissible error of length measurement along any axis (one dimensional), identified as any combination of E0x MPE, E0y MPE or E0z MPE, equal to or less (better) than (1.25 + L/1000) μm (where L is the measured length in mm) at any point within the operating range of the machine (i.e., within the length of the axis), according to ISO 10360‑2(2009); or
2. Three or more axes and having a three dimensional (volumetric) maximum permissible error of length measurement (E0,MPE) equal to or less (better) than (1.7 + L/800) µm (where L is the measured length in mm) at any point within the operating range of the machine (i.e. within the length of the axis), according to ISO 10360–2(2009);
              Technical Note:
              The E0,MPE of the most accurate configuration of the CMM specified according to ISO 10360‑2(2009) by the manufacturer (e.g., best of the following: probe, stylus length, motion parameters, environment) and with all compensations available shall be compared to the 1.7 + L/ 800 μm threshold.
2. B. 206. b. Linear displacement measuring instruments, as follows:
1. Non‑contact type measuring systems with a "resolution" equal to or better (less) than 0.2 μm within a measuring range up to 0.2 mm;
2. Linear variable differential transformer (LVDT) systems having both of the following characteristics:
a. Having any of the following:
1. "Linearity" equal to or less (better) than 0.1% measured from 0 to the full operating range, for LVDTs with an operating range up to 5 mm; or
2. "Linearity" equal to or less (better) than 0.1% measured from 0 to 5 mm, for LVDTs with an operating range greater than 5 mm; and
b. Drift equal to or better (less) than 0.1% per day at a standard ambient test room temperature ± 1 K (± 1ºC);
2. B. 206. b. 3. Measuring systems having both of the following characteristics:
     a. Containing a laser; and
2. B. 206. b. 3. b. Capable of maintaining for at least 12 hours, over a temperature range of ± 1 K