Hand-held Calculators

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Brother PRO-CAL 408

Brother  PRO-CAL 408

Brother PRO-CAL 408

Distinctive features: One of the first hand-held, battery powered calculators.

Technical details:
Display is 8 digits, individual green fluorescent tubes.


6.0v rechargeable battery.

102 mm x 172 mm x 53 mm. (4" x 6.75" x 2.1").

Introduced 1971.

Made in Japan.

Inside Brother  PRO-CAL 408

The rear cover has been removed to show the circuit board assembly.

Hand-holdable, but definitely not a pocket calculator.

Hand-held Calculators

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