Profile: Sentinel ™ Instruments is an original equipment manufacturer of engineered measurements and instrumentation systems for use in the petroleum industry. We design, manufacture and distribute a range of marine crane safe-load indicators for the offshore oil and gas industry, and later expanded its product line to include bulk tank weighing systems, anchor tension monitoring systems, import/export riser in-haul monitors, and other customer-specific specialty products to enable accurate measurement of mechanical and electrical loading of oilfield machinery and ancillary equipment.