Colour coded spring Balances for both force and mars measurement. Individually calibrated dual scale spring Balances has zero adjustment device with stainless steel suspension loop and load hook : (a) 1N/100g (Brown)(b) 2.5N/250g (Blue)(c) 5N/500g (Green)(d) 10N/1Kg (Ivory)(e) 20N/2Kg (Red)(f) 30N/3Kg (White)