Registers – Calculators – Tabular
Patent
1979-09-17
1982-04-06
Hix, L. T.
Registers
Calculators
Tabular
235 70A, G06C 300
Patent
active
043237665
ABSTRACT:
A diagram analyzing device is provided which is particularly useful in simultaneous interpretation of a plurality curves representing economic data. The curves are drawn to a common scale and provided on transparent sheets so that they can be superimposed one on the other, two or more at a time. A transparent calculating ruler used in association with the curves enables a user to analyze the data presented in the curves, i.e., to make calculations using the data, and to determine the inter-relationships between different sets of data, as well to discern trends and rates of growth. A table of events used in conjunction with the curves enables the data to be interpreted in light of events taking place in the economic world which are thought to influence this data. The calculating ruler contains two different logarithmic scales along the longitudinal edges thereof, with the number "1" providing a baseline for each scale, together with a plurality of time scales across the width thereof.
REFERENCES:
patent: 2219429 (1940-10-01), Osterberg
patent: 3141610 (1964-07-01), Jones
patent: 4027884 (1977-06-01), Oakley
patent: 4122994 (1978-10-01), McReynolds et al.
Fuller Benjamin R.
Hix L. T,.
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