E27 lampholder gauge

According to standard IEC, szcx produced high accuracy and high quality "Go" and "Not go"gauge .
• GNG-E27 is for E27 lamp cap standard source measurement. It includes 7006-27B-1, 7006-28A-1, 7006-27C-1, 7006-50-1, 7006-51A-2, 7006-51-2
• GNG-E27H is for E27 lamp holder standard source measurement. It includes 7006-25A-2, 7006-26-4, 7006-21-5, 7006-22A-4, 7006-22B-1, 7006-22C-1, 7006-22D-1
• GNG-E14 is for E14 lamp cap standard source measurement: 7006-27F-1, 7006-27F-1, 7006-54-2, 7006-27G-1, 7006-55-2
• GNG-E40 is for E40 lamp cap standard source measurement: 7006-27-7, 7006-28D-1, 7006-52-1, 7006-53-1
• GNG-B22D is for B22d lamp cap standard source measurement: 7006-12-8, 7006-15-7, 7006-20-4, 7006-12A-2, 7006-12B-2, 7006-15A-2, 7006-13-5, 7006-17B-1
• GNG-B22DH is for B22d lamp holder standard source measurement: 7006-12A-2,7006-12B-2,7006-15A-2,7005-10-8