Comparison of indexing tables, with small angle devider

Progress, October 2003

 

Two indexing tables are provided by SMD. The first one is a Moore 1440, standard version. The second one is a Moore 1440 with a supplementary small angle divider.

 

The 2 indexing tables have been transported from SMD to LNE in March 2003. Measurements were carried out by LNE on both indexing tables and are finished. The indexing tables were transported to SMD in November 2003. Measurements at SMD were planned in spring 2004 but are not finished yet because there are problems with the autocollimator. The autocollimator is actually under repair and recalibration after repair. Measurements at SMD are planned now for autumn 2004.

 


 

Proposal

 

SMD will restart its activities for a CMC entry for calibration of indexing tables and polygons. One of the important aspects of proving the capability for these calibrations and for validating the calibration methods is obtaining good results in international comparisons. BNM-LNE is prepared to give help by participating in a bilateral comparison which will thus support the MRA (CMC).

 

Two indexing tables are provided by SMD. The first one is a Moore 1440, standard version. The second one is a Moore 1440 with a supplementary small angle divider.

Subjects
Length (L)
Coordinating Institute
SMD (Belgium)
Participating Partners
LNE (France)