If you select Using GSM cutter  option you only have to put the weight othe field is not necessery to fill 
                    But when you select without Gsm cutter option you have to fill all the box unless you won't find the result
                
            
                Sample weight 
                Sample Length 
                Sample width 
            
                 Using GSM Cutter (You have to meassure the weight after cutting the fabric through GSM Cutter)
                
                 Without GSM Cutter(Provide proper weight and length of the material)
            
N.B: This calculation is mainly used for Textile materials.
            N.B: Area of round GSM cutter is (1/100) m2 
            Fabric’s GSM = Average cutting swatch weight × 100
        
GSM is = (sample weight in gm)/(sample length in meter * sample width in meter)