Related Clues:

• Beaded counting frame
• Counting device
• Mechanical calculator
• Ancient adder
• It adds up to get a taxi to come back to us
• Beaded device
• Calculator's ancestor
• Ancestor of a calculator
• Old counter?
• You can count on it being at the top of a column
• Calculator of old
• Adder with wiry frame and beady look
• Graduate account held by us - calculator needed
• Jack and Bill acquire American calculator
• Counting-bead device