Question about dating + details of a Barr & stroud FT 32 rangefinder

[Mikedenmark]

Usually I don´t buy british optics, but today was an exception.

I bought a Barr & Stroud FT 32 rangefinder. Serial number 26304.

I know the records exist, but where can I ask to find out who purchased it?
Is it the museum in Glasgow?

I checked the book on B&S rangefinders: Range and vision, no clue as to date. Has a patent date from 1921, so probably mid 1930-ies.
But the purchaser?

The rangefinder has plates all over it, with danish text on how to use it. But, afaik, the danish army only purchased B&S rangefinders after WWII, and they were issued as danish model 1954.
Those had a box like center piece, and are different from the FT 32. WWII models most likely, and probably FT 37 or something like that.

The danish army did try to get to test a B&S early on.
But after dispatching several instruments back and forth between Denmark and Scotland, for over 3 years !!!, without ever receiving an instrument in working order, they gave up and bought Zeiss instead.

So, this one is an oddball.

[Binoswede]

I have a B & S range finder (70 cm) marked F.T.33.
It has serial number 26650 and Swedish text!
I have a feeling the F.T. Numbers are different batches in cronological order as produced.

[Mikedenmark]

I think each FT model is a model in it´s own right. Not sure.
Only, the same FT models are known with different basis lenghts. So what exactly defines a model, I cannot say.

I managed to find the inquiery email for Glasgow University, who has the B&S archive now.
I hope they can help.

At the time Bill Reid wrote his book, the archives were still at the company. They were later handed over to the university.