Related Clues:

• Bead counters
• You can count on these
• Old counting devices
• Summers of old?
• Old counters
• Old calculators
• Calculators of yore
• Sliding-bead adders
• You can always count on these
• Wooden counters?
• Early summers?
• Basic calculators
• Beaded adders?
• Bead counters?
• Asian counters