Magic Brain Calculator - How to Subtract

Share your videos with friends, family, and the world

Magic Brain Calculator - How to Subtract

Found this old calculator in my great grandmother's attic : r/mildlyinteresting

1950's Calculator Magic Brain Vintage Personal Computing on eBid United States

Magic Brain: Last Gasp of the Mechanical Calculator

Magic Brain Calculator, c. 1950-1969 - Machine, Calculating

Magic Brain Calculator - A vintage mechanical addiator type calculator, 1950-60s - Aluminium, Plastic, original packaging - Catawiki

Group of Vintage Adding and Numbering Machines

Powerhouse Collection - Two Magic Brain pocket calculators

Magic Brain Calculator - How to Subtract

Magic Brain Calculator - How to Subtract

Santa Cruz Biotechnology (SCBT) - 1960's Magic Brain Calculator. #SoCool #Math #Antiques