- Alpa Metrology FA285 (FA2852)- Manufacturer: Alpa
 - Threaded plug NPT ALPA FA285 Conical thread. Variation: FA2852 | Ø and pitch: 2" - 11,5 Pontoglio, Italy
- Alpa Metrology FA285 (FA2853)- Manufacturer: Alpa
 - Threaded plug NPT ALPA FA285 Conical thread. Variation: FA2853 | Ø and pitch: 3" - 8 Pontoglio, Italy
- Alpa Metrology FA280 (FA28014)- Manufacturer: Alpa
 - NO GO threaded rings GAS ISO 228 ALPA FA280 Cylindrical thread. Pontoglio, Italy
- Alpa Metrology FA280 (FA28018)- Manufacturer: Alpa
 - NO GO threaded rings GAS ISO 228 ALPA FA280 Cylindrical thread. Pontoglio, Italy
- Alpa Metrology FA275 (FA275234)- Manufacturer: Alpa
 - GO threaded rings GAS ISO 228 ALPA FA275 Cylindrical thread. Pontoglio, Italy
- Alpa Metrology FA280 (FA2802)- Manufacturer: Alpa
 - NO GO threaded rings GAS ISO 228 ALPA FA280 Cylindrical thread. Pontoglio, Italy
- Alpa Metrology FA275 (FA275118)- Manufacturer: Alpa
 - GO threaded rings GAS ISO 228 ALPA FA275 Cylindrical thread. Pontoglio, Italy
- Alpa Metrology FA275 (FA275214)- Manufacturer: Alpa
 - GO threaded rings GAS ISO 228 ALPA FA275 Cylindrical thread. Pontoglio, Italy
- Alpa Metrology FA275 (FA275238)- Manufacturer: Alpa
 - GO threaded rings GAS ISO 228 ALPA FA275 Cylindrical thread. Pontoglio, Italy
- Alpa Metrology FA275 (FA275114)- Manufacturer: Alpa
 - GO threaded rings GAS ISO 228 ALPA FA275 Cylindrical thread. Pontoglio, Italy
- Alpa Metrology FA275 (FA2751)- Manufacturer: Alpa
 - GO threaded rings GAS ISO 228 ALPA FA275 Cylindrical thread. Pontoglio, Italy
- Alpa Metrology FA280 (FA280118)- Manufacturer: Alpa
 - NO GO threaded rings GAS ISO 228 ALPA FA280 Cylindrical thread. Pontoglio, Italy
- Alpa Metrology FA280 (FA280214)- Manufacturer: Alpa
 - NO GO threaded rings GAS ISO 228 ALPA FA280 Cylindrical thread. Pontoglio, Italy
- Alpa Metrology FA280 (FA280212)- Manufacturer: Alpa
 - NO GO threaded rings GAS ISO 228 ALPA FA280 Cylindrical thread. Pontoglio, Italy
- Alpa Metrology FA280 (FA280234)- Manufacturer: Alpa
 - NO GO threaded rings GAS ISO 228 ALPA FA280 Cylindrical thread. Pontoglio, Italy

