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Features
1. Instrumentum hoc est instrumentum mensurae mechanicae cum methodo comparativo, maxime adhibita ad ID et OD metiendam, quartum gradum ac parietem crassitudinis differentiae internae et externae sistendi.
2.Id maxime adhibetur ad ID et OD metiendam, rotunditatem, ceream et latitudinem anuli exterioris ferentis.
Specifications
| model | measurement range | indicium erro | Variatio indicium |
| D922 | Diameter interior 3-10 | ± 0.001 | 0.001 |
| D923 | Diameter interior 20-100, diametro exteriore 15-80 | ± 0.001 | 0.001 |
| D923A | Diameter interior 20-100, diametro exterioris 15-80 | ± 0.001 | 0.001 |
| D924 | Diameter interior 50-140, diametro exteriore 30-120 | ± 0.001 | 0.001 |
| D925 | Diameter interior 60-220, diametro exteriore 60-200 | ± 0.001 | 0.001 |
| diametrum exterioris | |||
| D913 | Diameter exterior 30-120, latitudo 8-60 | ± 0.001 | 0.001 |
| D913 1, | Diameter exterior 30-200 | ± 0.001 | 0.001 |
| D914 | Diameter exterior 30-120, latitudo 70 | ± 0.001 | 0.001 |
| D915 | Diameter exterior 215-300, latitudo 70 | ± 0.001 | 0.001 |
| D916 | Diameter exterior 400-600 | ± 0.001 | 0.001 |
