Object Details
distributor
Extra Measures, Inc.
maker
Safe-T Products, Inc.
Description
This hollow white plastic instrument has paper scales. One side has a 39-inch ruler, divided to 1/8" along the top and to 1/2" along the bottom. Alternate pairs of half-inches are colored orange on the bottom scale. The interior of this side has a recycling symbol around the number 7. The rule is marked: P.O. BOX 692 La Grange, IL 60525 SAFE-T RULERTM.
The other side is a meter stick, divided along the top to millimeters and along the bottom to centimeters. Alternate centimeters are colored blue on the bottom scale. The rule is marked: SAFE-TTM METER STICK. According to the donor, this meter stick is designed so that the straight edge is at some distance from the chalk or dry erase board.
Safe-T Products, Inc., was established in the northwest Chicago suburbs in 1992 to manufacture and sell drawing instruments that were safe for children. Thus, the plastic of this instrument is shatter-resistant. It sold for $12.95 in 2000. For company history, see 2000.0160.04.
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
2000.0160.05
accession number
2000.0160
catalog number
2000.0160.05
Object Name
rule
scale rule
Physical Description
paper (overall material)
plastic (overall material)
Measurements
overall: 1.8 cm x 100 cm x 6.7 cm; 23/32 in x 39 3/8 in x 2 5/8 in
place made
United States: Illinois, La Grange
associated place
United States: Illinois, Bensenville
See more items in
Medicine and Science: Mathematics
Metric System
Science & Mathematics
Measuring & Mapping
Scale Rules
Data Source
National Museum of American History
Subject
Mathematics
Rule, Measuring
Education
Link to Original Record
Record ID
nmah_904393