9 foundry equipment for sand casting and molding, namely, sand monitor, weight adder shut off gate, diaphragm level probe, capacitance type level electronic control, automatic computerized sand tester, moldability electronic continuous controller, moldability electronic batch controller, mill moist meter, compactability electronic controller; laboratory equipment for sand testing laboratories for use in foundries, namely, balances, electronic moisture tellers, densitometer machine, tensile testers, hot and cold box tensile testers, shear testers, hardness scale readers, hydrometers