Q: What size batteries does this unit use?
A: 3 - AAA batteries.
Q: Where can this unit be repaired if it is broken after its one year warranty?
A: Ono Sokki Technology
Phone: 630 627 9700 ext 118
Contact: Dan Hora
Part Number: MT137D
Q: What is the reorder number for the calibration set of stickers?
A: 425207 (5 cards with 12 per sheet)