Safe-T Pro>Ruler Combination Protractor, Triangle, and Ruler, Group of 2
date: label: date made
content: ca 2000
label: associated date
content: 2000
name: label: distributor
content: Extra Measures, Inc.
label: maker
content: Safe-T Products, Inc.
notes: label: Description
content: These clear plastic objects are two different sizes of the same instrument. Each instrument consists of two rectangular pieces with half-discs at one end. The pieces are held together at their curved ends with a metal thumbscrew, so the instrument resembles a sector. The top half-disc has a magnifier for reading from the scale of degrees, numbered by tens from 180 to zero, around the edge of the bottom half-disc. Besides measuring angles, the protractor may be used to open the rectangular pieces to a desired angle. Then, an angle or triangle may be drawn along the inside edges, which are marked with a centimeter scale divided to millimeters.
label: Description
content: The outer edge is also marked with a centimeter scale that may be used by fully opening the instrument. The larger instrument has an overall width of 60cm, and the smaller instrument is 30cm across. The device can draw and measure lines and measure three-dimensional angles.
label: Description
content: The larger instrument is marked: PRO > RULER<sup>TM</sup> #43052 (/) SAFE-T PRODUCTS<sup>TM</sup>, Inc. (/) LaGrange, IL 60525-0692. One of the flat ends is stamped with the number 2, and the other flat end is stamped with the number 3. The smaller instrument is marked: PRO > RULER<sub>TM</sub> by SAFE-T<sub>TM</sub> (/) #43051 (/) View-Thru<sub>TM</sub> SAFE-T PLASTIC<sub>TM</sub> (/) LaGrange, IL 60592-0692. Both of the flat ends are stamped with the number 2.
label: Description
content: The larger instrument is in a plastic envelope with instructions on the back. The back is marked: Made in Taiwan. It is also marked: PATENTED U.S., R.O.C., AUSTRALIA, GERMANY AND P.R.C. The smaller instrument is in a plastic envelope with a paper sheet of instructions. This sheet is marked: Made in Taiwan. It is also marked: PATENTED R.O.C., AUSTRALIA, GERMANY AND P.R.C. U.S. AND CANADIAN PATENTS PENDING. Thus, the smaller instrument is probably slightly older than the larger one. The patents were not identified, but the donor reported that the inventor was from Taiwan.
label: Description
content: Extra Measures, Inc., distributed this instrument in the United States. In 2000, model number 43051 sold for $3.50, while the "jumbo" sized model number 43052 sold for $18.95. For company history, see 2000.0160.04.
label: Description
content: Reference: accession file.
label: Location
content: Currently not on view
place: label: place made
content: Taïwan
label: associated place
content: United States: Illinois, Bensenville
topic: label: Subject
content: Mathematics
label: Subject
content: Protractor
label: Subject
content: Rule, Measuring
label: Subject
content: Drawing Instruments
setName: label: See more items in
content: Medicine and Science: Mathematics
label: See more items in
content: Science & Mathematics
label: See more items in
content: Scale Rules
creditLine: label: Credit Line
content: Gift of Extra Measures, Inc.
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 2000.0160.12
label: accession number
content: 2000.0160
label: catalog number
content: 2000.0160.12
objectType: label: Object Name
content: scale rule and protractor
physicalDescription: label: Physical Description
content: metal (overall material)
label: Physical Description
content: paper (overall material)
label: Physical Description
content: plastic (overall material)
label: Measurements
content: overall: 1.8 cm x 34.4 cm x 6.2 cm; 23/32 in x 13 17/32 in x 2 7/16 in