Aristo M85/M85S

Serial Number 303, 2L004 0567 molded on top edge
Accessories Protective plasic cover


Manual, (German), with two punch holes and a name stamped on the back with a date label Aug 8, 1975

Built-in accu pack, still working (I removed it to avoid leakage)
Condition Excellent.
Acquired 8.9.2002

Serial Number
Accessories Protective plastic cover, broken
Condition The calculator itself is in excellent shape.  On the bottom a label of the "Stadtsparkasse Dortmund".
Acquired 25.11.2003
Type, Precision, Input Mode Scientific, 8 BDC digits, exponent 99, Algebraic Entry
Programmable No
Memory 1 storage register, not permanent
Display M85: 12 digit 7-segment red LED
M85S: 12 digit 7-segment green LED
Special features Memory arithmetic. Instruction sheet on the back of the calculator.
Original Pricing, Production Unknown, approx. 1974, Dennert & Pape, Hamburg Germany
Links See Aristo M64
Batteries M85: 3x AA (accu pack or normal batteries), external AC power supply 7.5V, minus on center
M85S: Built-in accu pack or external DC 4.5V off-the-shelf power supply.
Dimensions Length 15cm, Width 7.5cm, Height 2cm
Comments The M85 displays 1/2 as 5E-1. The M76 displays this as 0.5.
Calculator forensics value 6.58003 (both M85 and M85S).
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