Today I added a web page for the Russian meteorological instrument manufacturer Safonovsky Gidrometpribor.  It's in the 'Weather Instrument Catalog Collection' section of the home page, under 'Russia'.  I also added a page for a Safonovsky Gidrometpribor BAMM-1 barometer in the 'Weather Instrument Collection' section of the home page, under 'Aneroid Barometers'.  Unfortunately the barometer is not functional.

For the 27 aneroid barometers in my collection, I calculated and tabulated the readability of the pressure scales.  By readability I mean the number of millibars per centimeter of pressure scale on the outermost scale of the barometer.  I added a page to the website with a table of the readability values and the barometers ranked from most readable to least readable.  Not surprisingly, the largest barometers were most readable, while the least readable was a pocket altimeter.  The table is found on the page 'Aneroid Barometer Readability' under ' Barometric Calculations, Calibration, and Accuracy' on the Home Page.

Go to Readability Table.

I have fallen behind in adding the instruments in my collection to the website.  In the last few days I added nine aneroid barometers to the website, including the following:

1. A CENCO desk barometer, actually manufactured by Swift & Anderson.
2. A Changchun DYM3 barometer from China.
3. A Fischer Type 103 marine barometer.
4. Another Friez WWII ship's barometer made for the US Navy (Listed as Friez #3).
5. A Lilley & Gillie marine barometer.
6. A Naudet barometer.
7. An Observator marine barometer.
8. A SUNDO marine barometer.
9. A Wallace & Tiernan ML-102-D 1944 US Army barometer.

Each of these instruments now has a web page in the 'Weather Instrument Collection' section of the website, under ' Aneroid Barometers'.  If anyone can contribute any information on these instruments, please email me.

I will be adding more thermometers and hygrometers after December 1, due to the US Thanksgiving holiday.

Today I added more CENCO catalog meteorological excerpts (from 1909, 1912, and 1936) and more Eimer & Amend catalog meteorological excerpts (from 1913 and 1936).  A 1929 CENCO catalog is coming shortly. In the next couple days I will be adding more instruments to the instrument collection section of the website.

Regarding the comment, Swift & Anderson used that name from 1929 to 1959.  I have a 1949 S&A catalog on the website and that doesn't show the instrument you describe.  That's all the information I have at this time.  If I knew more on S&A I would put it on the website.  It might help if you sent me a picture of the barometer.

In the future please send questionsto my email address, wrymar99@gmail.com, rather than as comments on the blog.  Weebly doesn't seem to let me reply to comments, only approve them.

In my last post I described a problem that recently posted PDF files couldn't be opened on Apple iPads and iPhones.  After much work I came across a way of creating the PDFs that avoids the problem.  I'm still not sure what was going wrong, and I think it only affected the CENCO catalog files that I created and posted in the last week.  I have rescanned the CENCO catalogs and uploaded them again to the website.  They can now be downloaded, at least on my iPad and iPhone.  There was never a problem downloading the catalogs on a Windows computer or Mac.

I've had a problem with the CENCO catalog files I posted on the website a couple days ago,  They won't download on Apple iPad and iPhone devices.  They download fine when I'm on my Windows 10 desktop computer.  Apparently something went wrong with the encoding of the CENCO PDF files when I scanned them.  I will have to rescan them and will post the corrected files in a couple days.

Meanwhile I added a catalog page for Eimer & Amend in the US catalog section of the website.  I uploaded one 1920 catalog and will add several more catalogs in the next few days.  This file is downloading ok on my iPhone and iPad.

In the last couple days I added catalog pages to the website for the Standard Thermometer Company and the Central Scientific Company (CENCO).  They're in the US catalog section. In a few days I'll add a catalog page for Eimer & Amend, which was a US scientific instrument supplier from 1851 to the 1940s, when they were acquired by Fisher Scientific Company.  I will also add more barometers and thermometers to the instrument collection section.

I've been away from the website with bronchitis.  I've also been distracted by the Chicago Cubs' World Series win.