Mental calculator



Mental calculator

This normal looking mental calculator can be used as a normal calculator. You control the number you want to force (up to 8 digits) and you can change it whenever you want according to your needs.

With the mental calculator you can make many mine reading effects. Several spectators are asking to freely chose numbers and make different math calculations (add, deduct, multiply etc). The final result will match your prediction. You can change it every time to suit your needs. Spectators can check the mental calculator even after you have entered your secret number. Can be use also for Add-A-Number effect.


Calculator size – 4” x 6” (10 x 15 cm),

color and model may change according to availability

Additional information

Weight 0.3 kg


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