In article , Eric Stevens
wrote:

I did find my first exposure meter the other day, well a bit of it, think
the make was sekonda or similar

sekonic

As in Seiko. A close relative of Epson.

as in made by sekonic:
https://www.photrio.com/forum/attachments/dsc01839-jpg.60853/
https://www.photrio.com/forum/attachments/dsc01840-jpg.60854/

sekonic today:
https://www.sekonic.com/

seiko was well known for shutters:
https://www.photrio.com/forum/attachments/seiko-slv-front-jpg.156169/

close, but not quite were mamiya/sekor cameras:
https://c1.staticflickr.com/1/178/458003503_b04be90dd8_b.jpg