A good weighing machine(Rechargeable inbuilt battery) is essential . Digital Weighing Scale- 10 kg is a good weighing scale that you can purchase online. It is made up of plastic which makes it an easy to handle and portable weighing scale. Comes with Dual Zero Button Dual Led for better Inside Case Built on Aluminum Load Cell Battery back up of up to 8hrs on a single charge Weighing Capacity 10 Kg Minimum Weighing Capacity 10gms Lithium Ion Battery