Spring Balance 1kg Transparent Tubular Cap Spring Balance 1kg Offering Colour Coded Spring Balances For both force and mars measurement. Individually Calibrated Dual Scale Spring Balances has zero adjustment device with stainlesssteel suspension loop and load hook.spring balance acrylic, tubular type, Dual Scale both In grams and newton, provision for zero adjustment at top.1 KG./5n . Beware of duplicate,low Quality products. Buy only from National Scientific Apparatus Works Store.