This is a batch of flasks being inspected prior to shipment. This configuration is favored by companies which:
(a) Desire to thermally protect only a section of their electronics (such as detectors, batteries, CPU's, etc.).
(b) Operate in locations where the jobs have a large borehole-to-electronic diameter ratio.
(c) Need to replace an old damaged flask.

Modern flasking needs are served more efficiently by Thermohousings (integral systems).