These portable digital scales are a bargain at $10. They weigh up to 40kg and make weighing animals in care very easy.
First weigh the carry bag you will use to weigh your animal including the pouch you will be using.
Turn on the scales and attach the carry bag containing the animal in its pouch
Note the weigh then subtract the weight of the pouch and carry bag
You do not have to disturb the animal and it is secure in the pouch