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MANTISSA RIETZ
( 25 cm Scales )
VEB MANTISSA, Dresden / (GDR) Germany (1972)
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VERSION (A)
S C A L E S of the M A N T I S S A » RIETZ « Nr.1731511
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Front Side [ inverse / RED ] Back Side
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K X3
A X2
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B X2 S sin(0.1X)
[CI] [1/X] ST arc(0.01X)
C X T tan(0.1X)
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D X
L lgX
R E M A R K S : ( 1° = 60' ; 1' = 60" )
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The TRIGONOMETRIC SCALES are divided in MINUTES & SECONDS
To read the Trigonom. Scales, the SR had to be turned and
adjusted. It came in a grey cardboard case with instruction.
A NEWER VERSION (B) has a DIFFERENT CURSOR ...
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The cursor is glued together and not removable for cleaning!
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