i would say if you've already got electronic scales that you can set back to zero with food on (on mine thats called 'tare' for some reason) then dont bother to buy anymoe. The mathes really isnt that hard - honest!
Weigh your food (after you've cooked it if you are going to) and note the weight (I have a little note book for this as I have a bad memory for numbers) Look up the amount of carbs per 100g of the item (as this is the usual figure given) either on the packet, in a book, on the net etc. Divide that number by 100 (to get the amount per 1g) then multiply the amount per 1g by the weight of the food. This bit is the bit the scales would (allegedly) do
When you have done this for all the components of your meal, add them together and divide by the ratio you have (hopefully) been told to use.
say the Meal came to a total of 100 carbs (for easy maths) and you are on a ratio of 1 units per 10g of carbs - you divide 100 by 10 and you would inject 10 units
🙂
The bit I have underlined is the bit the scales do for you - youve still got to do the rest so i dont think its worth buying extra scales (and you cant use them when you go out anyway
It IS scary at first - but if you write it all down it will help (I still do
😉)