Keywords:
Circular shape, Compression testing, Dimensions, Glass, Instruments, Marking, Non-destructive, Non-destructive testing, Offshore engineering, Panes (windows), Portholes, Rectangular shape, Rectangular windows, Safety glass, Shipbuilding, Ship's scuttles, Strength of materials, Testing, Tolerances (measurement), Toughened glass, Toughened safety glass, Washers, Windows