Vintage Metrohm Model 9A Insulation & Continuity Tester Ex MOD A Vintage Metrohm Model 9A Insulation & Continuity Tester Ex MOD, NATO no. 0657-6625-99-740-0530. Dating to the 1980s, it was last calibrated on 19/11/93! In excellent condition, with a few surface blemishes, it comes with its yellow leatherette carry case, leads and instruction manual. It takes 6-HP7 pen cell 1.5v batteries- not included due to the difficulty in shipping anything containing batteries. Summary: Metrohm Model 9A with a Test voltage of 250 Volts Labelled DDA0145 Issue 4 Made by Edgcumbe Instruments (NEI Electronics Ltd), Glasgow, UK Scale Measures 0-500 volts AC, 0-100 MΩ Insulation, 0-100 Ω Continuity Serial no. 907330 Bright yellow Transit Case Nato No. 0657-6625-99-740-0533 Lead Set DFK0010 *NATO no. 0657-6625-99-740-0532 Please click on the following link for more vintage test meters.