Institutut de Cercetare Stiintifica Si Inginerie Tehnologica Pen

Instrument Manufacturing Company

Instrument Transformers Limited

Instrumentation Engineering

Instytut Elektrotechniki

Integra5 Communications Inc

Intellimeter Canada Inc.

Intellitech Corporation

Intelogis Inc.

Interactive Communication Solutions Pty Ltd

Interface Technical Components Limited

Interiano Armando

Intermech Engineering & Trading

International Validators Inc.

Intreprinderea de Aparate Electrice de Masurat

Invensys Metering Systems - North America Inc.

Inventronics Inc.

Invisa Inc.

Iprobe Ab

Irie Satoshi