Metric block toy

Details Metric block toy Metric block toy

1988-06-16

1989-06-13

Grieb, William H.

Education and demonstration

Measurement of length or volume

434195, 434207, 434208, 434403, G09B 134

Patent

active

048387940

ABSTRACT:
A metric block toy comprising ten blocks of varying colors, each block being a one tenth of a meter cube, and having indicia designating ten centimeter increments along one edge of each block, together with other legends designating the length of the edge invarying metric terms. The blocks, when placed in aligned relation, indicate the total length of one meter.

REFERENCES:
patent: 2635355 (1953-04-01), Thompson et al.
Knott Apparatus Co., pp. 29, 30, 10-25 Catalog 21, 1917.
Welch Scientific Co., p. 16, Item 0132, 1965.

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