This is a complete California Bearing Ratio (CBR) Test Mould set used for soil compaction testing.
The set typically includes a mould body, extension collar, base plate, spacer disc with handle, surcharge weights, and a perforated swell plate.
The red case contains a dial gauge and tripod holder for measuring expansion during testing.
These tools are designed to meet standards such as ASTM D1883 or BS standards for laboratory soil testing