Back to results
US 4,152,845 AGranted
Metric conversion board
OwnerHershel L. Ezzellinventor
Life of this patent
Estimating the term…
Abstract
An English to metric conversion chart is provided on the face of a wooden board between a pair of spaced parallel grooves extending up and down on the board. A Fahrenheit thermometer is mounted in one of the grooves and a Celsius thermometer is mounted in the other of the grooves. A sheet of transparent plastic covers the face of the board and the grooves.
Claims1
A metric conversion board, comprising
- a wooden board of substantially square shape with a substantially planar face, a top edge, a bottom edge substantially parallel to the top edge and a pair of spaced parallel side edges, said board having a projecting part extending substantially vertically from the top edge and coplanarly with the board equidistantly spaced from the side edges and substantially parallel thereto, said top edge having a pair of arcuate indentations formed therein, each extending from the projecting part to a corresponding one of the side edges and said projecting part having a free end spaced from said top edge and having a bore formed therethrough for facilitating hanging of the board on a substantially vertical supporting surface, said board having a pair of grooves formed in its face parallel to the side edges and each adjacent corresponding ones of said side edges;
- an English to metric conversion chart on the face of the board between the grooves;
- a Fahrenheit thermometer mounted in one of the grooves;
- a Celsius thermometer mounted in the other of the grooves;
- and
- a sheet of transparent plastic covering the face of the board and the grooves.
3 more elements
Dependencies are inferred from the claim text.