McNaught's Steam Engine Indicator.
- Made:
- 1825
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Buy this image as a print
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Science Museum Group
© The Board of Trustees of the Science Museum
Science Museum Group
© The Board of Trustees of the Science Museum
McNaught's Steam Engine Indicator.
This is an example of the indicator introduced by Mr. John McNaught of Glasgow about 1825 and made by him subsequently to that date (see inv. 1897-60). The drum has clips to hold on the paper but in earlier examples cement was used for the purpose. The pencil is on a hinged arm attached to the piston rod and projecting horizontally so as to command the drum. Four springs are provided; corresponding to 5, 10, 15 and 30 lb. per in. The cylinder is 0.25 sq. in. area with a travel of 3.5 in. while the drum is 1.5 in. diam. so that a diagram about 2 in. by 4.5 in. could be obtained.
Details
- Category:
- Motive Power
- Object Number:
- 1922-488
- Materials:
- brass (copper, zinc alloy), steel (metal) and mahogany (wood)
- type:
- engine indicator
- credit:
- Spooner, H.J.
