Postal scales seem to be the best and the most economical. There are 28.3495 grahams in 1 ounce Kits rarely weigh more than two ounces and often barely more than an ounce. Plan for the future when you buy.
Think ahead ... you not only want a scale that weighs in grams, but in 1 or 2 graham increments, not in 5 graham increments or just ounces and pounds. You will need to keep up with the kit's weights when they are born. The loss and/or gain of weight in kits can be a good sign or the first sign of trouble.
Kits are usually born weighing between 36 and 54 grahams ... a fluctuation of 5 grahams could represent 1/7 or about 14% of a kit's total weight. (
Looking at it on a larger scale, if a child weighs 100 pounds and suddenly looses 14 pounds in 2 days, this child is sick.) Kits should be weighed daily, morning and evening, about the same time each day. If weight is lost between weigh-ins ... it could be that the kit has just weeweed or just nursed ... but if a kit goes down hill 3 weigh ins or 2 days in a row, it's headed for trouble. A calendar hanging near the cage is a great way to keep up with the fluctuations in weight ... important information, should it be needed.
Hope this helps!
Jo Ann