[Corey, Scott]
Hugh noticed some discrepencies between how the ends of the HAM Support Tubes looked with respect to the V-Blocks (basically, all the H2 ones looked inboard everywhere, and H1 looked better). Scott and I went around to each chamber and took a measure of the distance between bolt holes on the top of the airbearings (to get an idea of the crossbeam/crossbeam distance for each HAM chamber).
Below, shows the measurements we made between Air Bearings. Took linear measurement between Air Bearings (i.e. inline with the Support Tubes). Overall, the measurement looks similar. So, the notable issue is why the Support Tubes on H2 are all in-board of the V-blocks. Are these Support Tubes smaller??
(*Didn't make measurements for HAM6 since there was a suspended Clean Room over it)
| #1 | #2 | Visual Observations of Support Tube wrt V-Block outer surface | |
| HAM1 | 69-5/16 (east) | 69-5/16 (west) | Nice & flush |
| HAM2 | 69-7/16 (east | 69-8/16 (west) | Support Tubes translated to south |
| HAM3 | 69-5/16 (east) | 69-7/16 (west) | Support Tubes translated to south |
| HAM4 | 69-4/16 (south) | 69-6/16 (north) | Support Tubes translated to west |
| HAM6 | Flush with V-Block outer surfaces (very good!) | ||
| HAM7 | 69-4/16 (east) | 69-5/16 (west) | Inboard on both sides by quite a bit! |
| HAM8 | 69-4/16 (east) | 69-5/16 (west) | " |
| HAM9 | 69-4/16 (east) | 69-6/16 (west) | " |
| HAM10 | 69-9/16 (north) | 69-5/16 (south) | " |