Hydraulic-Press Brick Co. folding ruler #3

Object/Artifact

National Building Arts Center

Folded view of HPB folding ruler #3

Folded view of a light brown folding ruler with brass hardware

Name/Title

Hydraulic-Press Brick Co. folding ruler #3

Description

Brown folding ruler, labeled as Hydraulic-Press Brick Co., and is made foldable by brass hardware

Use

Promotional object, used as an everyday tool at HPB, or to show appreciation to employees of the company.

Collection

Promotional object displays

Made/Created

Time Period

19th Century, 20th Century

Inscription/Signature/Marks

Type

Label

Location

Front of ruler, nearer to the brass hardware

Transcription

"Hydraulic-Press Brick Co." and "Hy-tex Brick"

Language

English

Material/Technique

Label

Lexicon

Nomenclature 4.0

Nomenclature Secondary Object Term

Rule, Folding

Nomenclature Primary Object Term

Ruler

Nomenclature Class

Weights & Measures T&E

Nomenclature Category

Category 05: Tools & Equipment for Science & Technology

Dimensions

Dimension Description

This is for the unfolded view shown in picture 2, but not fully unfolded to its full length.

Height

3.4 cm

Width

31.4 cm

Parts

Count

Parts

Ruler

Material

Wood, Metal

Color

Brown

Condition

Overall Condition

Good

Condition Type

Discoloration, Rust

Date Examined

Jul 16, 2026

Examined By

Elena Marshall

Surface

Wood on the surface has more discoloration and darkening than folding rulers #1 and #2, and has rust on the brass hardware

Mechanism

The hinges on the ruler are slightly less movable than rulers #1 and #2, on account of more rust in the hinges.

Create Date

July 16, 2026

Update Date

July 18, 2026