Genesis Rutherford 4080 Image attached - Any dimensions ?

[Mustafa Umut Sarac]

Can you point me in to a reference dimension for scale the picture to full scale .
I need for example width of the guitar or bass bridge center of strings 1-4 distance , any kind of referencing dimension ?
If you press on the the image ,it expands.

[doctorwho]

I've not seen any dimensions for this instrument, but maybe someone else has.

As an alternative, an estimate can be made using a program such as GIMP (GNU Image Manipulation Program) in Linux. I'll show some examples.

(1) Using the measurement tool

I downloaded your picture and opened it in GIMP. There is a measurement tool available, so I accessed it (Tools/Measure) as shown in the following screenshot:

I used the tool to measure the distance between the points shown in this picture (sort of the body width):

The result (at the bottom) was 645.0 pixels. So how do we use that info? We need to measure something that we can measure in the real world.

I have a spare bass treble pickup assembly in my parts box, so I measured the width of the surround using a digital caliper: 4.422 inches (112.33 mm) So I used used the Measure tool in GIMP to measure it in pixels:

That measurement was 181.0 pixels.

The body width in inches is then calculated using a proportion:

"Body Width" = (645.0 pixels) * (4.422 inches/181.0 pixels) = 15.75 inches

(2) using a grid for measurement

GIMP also allows the addition of a grid to a picture:

One can then count the number of squares that make up the width of the aforementioned treble pickup surround, and use a similar proportion for making measurements by counting the squares between measurement points, One can also print the gridded picture and use a ruler to make measurements (using the number of squares per inch as a conversion factor).

One unknown factor is whether the focal plane of the camera used to take the original picture is parallel to the front surface of the guitar body; this is why the measurements are estimates.