A set of test objects designed to be used quickly and easily on an annual / commissioning basis to provide an ongoing check of imaging performance, particularly those aspects which are most liable to deterioration.

 Set includes:
• TO 20 threshold contrast test object
• Resolution test object (type 43-005) - 10LP/mm
• TO M1 geometry test object
• TO MS4 mesh test object
• Small lead block, Steel ruler, Tape measure and 1.5 mm Copper filter