Name/Title
Graphic Chemical Predicter Circular Slide RuleEntry/Object ID
2023.19.1.a-cScope and Content
a. Item is a circular chemical predicter produced by the Graphic Calculator Company. The predicter has two layers that shift over each other in order to match chemical equations. The top layer consists of clear and green sections, which have equations written on them, while the bottom layer is white (also with some equations printed there). Above these layers is a tab with red lines, which make the chemical formulas easier to combine and read. The predicter's layers are held together by a metal piece. On the back of the bottom layer, there are instructions telling the reader how to operate the chemical predicter. The purpose of this item is to help predict chemical reactions and balance chemical equations.
b. Item is the square envelop that the chemical predicter was stored inside. The envelop is made of parchment and sealed by a flap.
c. Inside the container, there is a tiny booklet that tells the reader how to use conversion tables and a circular slide ruler. It is white and blue, with a short table of contents on the inner front cover.Collection
Permanent CollectionLexicon
Nomenclature 4.0
Nomenclature Secondary Object Term
CalculatorNomenclature Primary Object Term
Processor, Digital DataNomenclature Sub-Class
Data Processing DevicesNomenclature Class
Data Processing T&ENomenclature Category
Category 06: Tools & Equipment for CommunicationRelationships
Related Person or Organization
Person or Organization
Frank Sauter