Rule

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Ingenium, 1969.0145.012
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OBJECT TYPE: N/A
DATE: Unknown
ARTIFACT NUMBER: 1969.0145.012

MANUFACTURER: Dobbie McInnes Ltd.
MODEL: Unknown
LOCATION: Glasgow, Scotland

More Information

General Information

Serial #: N/A
Part Number: 12
Total Parts: 26
AKA: N/A
Patents: N/A
General Description: WOOD

Dimensions

Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.

Length: 9.7 cm
Width: 1.9 cm
Height: N/A
Thickness: N/A
Weight: N/A
Diameter: N/A
Volume: N/A

Lexicon

Group: Industrial Technology
Category: Power sources
Sub-Category: N/A

Manufacturer

AKA: Dobbie
Country: Scotland
State/Province: Unknown
City: Glasgow

Context

Country: North America
State/Province: Unknown
Period: THIS TYPE OF INDICATOR USED IN LATE 1800S +.
Canada: Unknown
Function: TO TEST EFFICIENCY OF VALVES IN STEAM ENGINES, AND TO DETERMINE HORSE POWER DEVELOPED DURING OPERATION.
Technical: EXAMPLE OF STEAM ENGINE INDICATOR, WHICH IS USED AS ARECORDING PRESSURE GAUGE. IT PLOTS STEAM PRESSURE AND PISTON DISPLACEMENT IN A RECIPROCATING STEAM ENGINE. THIS TYPE WAS RECOMMENDED FOR USE ON ORDINARY MARINE AND LAND STEAM ENGINES. THE EXTERNAL SPRING DESIGN ALLOWED THE SPRING TO REMAIN RELATIVELY COOL WHEN NOT IN USE, PRODUCED MORE ACCURATE RESULTS, AND PROLONGED THE LIFE OF THE SPRING.
Area Notes: Unknown

Details

Markings: "100 TO THE INCH" & "DOBBIE-McINNES LTD." incised on rule, with scale on either edge 0-300, divided in increments of 2.
Missing: N/A
Finish: Unknown
Decoration: N/A

CITE THIS OBJECT

If you choose to share our information about this collection object, please cite:

Dobbie McInnes Ltd., Rule, Unknown Date, Artifact no. 1969.0145, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/id/1969.0145.012/

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