precision instrument case External Dimension : 403*330*175 mm / 15.9*13.0*6.9 inInternal Dimension : 380*280*151 mm / 15.0*11.0*5.9 in Weight ( Empty case ) : 2.5 kg / 5.51 lbs Shipping Dimension : 420*350*200 mm / 16.5*13.8*7.9 in Excellent protective cases for out door survey use or precisin instrument protection !