Well, I have made many scales in the past and if there is nothing special about it i would do it in a few hours.

The only thing you need to change is the size of the board and display and know where the batteries goes.

I used to work for a chinese factory making these babies in the past and i did earn alot of money, enough to buy a house and a car. However that was 18 different scales i did for them.

I also offered my services to other factories, they almost all liked my work and most of them paid without problem, some are cheaters that do not pay whatever you do. So I always have a relaxed attitude and most people pay. If they do I am happy to continue working with them. If not, I am still happy.

Now I work making defence missiles for company in Russia, oh well...