1. In hand: disponível, sob controle, em questão
We managed to redecorate the house and still have some savings in hand.
Don’t worry about the travel arrangements—everything is in hand.
Please confine your comments to the topic in hand.
2. At hand: próximo e acessível
I don't happen to have your application at hand at the moment.
I like to keep my tools close at hand.
3. On hand: disponível e acessível
Ms. Sharp will be on hand to answer questions later about the film
The two cosmonauts have seven hours of oxygen on hand, but the job should take only four hours.
Bons estudos. Compartilhe.