Object Details
distributor
Extra Measures, Inc.
maker
Safe-T Products, Inc.
Description
This orange plastic ruler has a 12" scale divided to 1/16" on one edge and a 30 cm scale divided to millimeters on the other edge. The rule is marked: Fold-n-RuleTM by SAFE-TTM. It is also marked: SAFE-T PLASTICTM #43033. The shatter-resistant ruler folds in half to fit in a pocket, purse, or pencil box. It was received in clear plastic packaging with a cardboard label. According to the donor, the ruler was designed for use with an overhead projector. It sold for $1.39 in 2000.
References: Safe-T/Basics by Extra Measures, Inc., about 2000; accession file.
Location
Currently not on view
Credit Line
Gift of Extra Measures, Inc.
date made
2000
ID Number
2000.0160.09
accession number
2000.0160
catalog number
2000.0160.09
Object Name
rule
scale rule
Physical Description
paper (overall material)
plastic (overall material)
Measurements
overall: .1 cm x 31.4 cm x 3.5 cm; 1/32 in x 12 3/8 in x 1 3/8 in
place made
China
associated place
United States: Illinois, Bensenville
See more items in
Medicine and Science: Mathematics
Science & Mathematics
Scale Rules
Data Source
National Museum of American History
Subject
Mathematics
Rule, Measuring
Education
Link to Original Record
Record ID
nmah_904397