…that spirally one to the left of Mr Clipboard

Well it’s logarithmic by the looks of it.

Peak Warming Man said:

Well it’s logarithmic by the looks of it.

Why wouldn’t it be?

could be a oil flow to calorific calc gauge. the cross hairs marked on the glass could be the optimal position.

ChrispenEvan said:

calc gauge. the cross hairs marked on the glass could be the optimal position.

to be less specific.. yes.. nothing wrong with your answer.

the bent indicator is moved by hand. the gauge card probably rotates.

ChrispenEvan said:

the bent indicator is moved by hand. the gauge card probably rotates.

all possible.. yes.

ChrispenEvan said:

the bent indicator is moved by hand. the gauge card probably rotates.

24 hour chart recorder, The near vertical line is the moving pen holder, fed ink via a capillary tube, the paper chart is replaced each day, the horizontal line is a paper guide when changing charts, the curved line is a spring clip to engage the paper chart onto the drive plate behind.

But I may be wrong.

Tejay said:

ChrispenEvan said:

the bent indicator is moved by hand. the gauge card probably rotates.

24 hour chart recorder, The near vertical line is the moving pen holder, fed ink via a capillary tube, the paper chart is replaced each day, the horizontal line is a paper guide when changing charts, the curved line is a spring clip to engage the paper chart onto the drive plate behind.

But I may be wrong.

I reckon you’d be right.

Michael V said:

Tejay said:

ChrispenEvan said:

the bent indicator is moved by hand. the gauge card probably rotates.

24 hour chart recorder, The near vertical line is the moving pen holder, fed ink via a capillary tube, the paper chart is replaced each day, the horizontal line is a paper guide when changing charts, the curved line is a spring clip to engage the paper chart onto the drive plate behind.

But I may be wrong.

I reckon you’d be right.

.
I recon it is recording steam temperature and pressure

The top gauges are ‘cockrane flow meters’ so it’s very obvious to me – It’s a very early starship in the Star Trek universe. The port output of Warp Drives in starships is measured in cockrane’s so that’s what it must be.
It does look like quite an early unit so it may well be steam driven. The wavy meter is likely to be measuring the local spacial graviometric density.

/nerd

In the hole to right of the recorder can be seen an ink bottle and the clockwork driven mechanism’s wind up key.

Looks to be a Pressure Recorder
http://www.coleparmer.com/buy/product/10791-pressure-recorder-0-200-psi-7.html

its a pen recorder.

Ta people. All seems a bit elaborate for a hotel fitting.

Bubblecar said:

Ta people. All seems a bit elaborate for a hotel fitting.

I would have thought a record of the pressure in that situation would quite important.

But I may be wrong.

I reckon you’d be right.
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It’s like the ferkin weather report…

We have a 60% chance of above average rainfall for the month.