What does OTG stand for?

Information Centre, Glaxo Canada, Inc., Toronto, Ontario - Library symbol - National Library of Canada (BIB)

Objective Transmission Grating (SAUS)

Oil Temperature Gauge (MSA)

OPTEVFOR - Operational Test and Evaluation Force Tactics Guide - Navy (CAAL)

Option Table Generator

Otolith Test Goggles - NASA (KSC)

Outrage - Telegraphy (PCTE)

Outside Temperature Gauge (ODA)

Worthington - Minnesota - Airport symbol (OAG)