I came across this Sangamo FM2S meter at a local antique store; Originally thought it was an older analog meter, until I took it apart, and spotted a PCB. Pictures are as follows:
{{multiple image|caption_align=center | align = center=Sangamo FM2S=== | direction <gallery mode= horizontal | header_align "packed" heights= center"200"> | image1 = File:Fm2s 001.jpg | image2 = File:Fm2s 002.jpg | image3 = File:Fm2s 003.jpg | image4 = File:Fm2s 004.jpg | image5 = File:Fm2s 005.jpg | image6 = File:Fm2s 006.jpg | image7 = File:Fm2s 007.jpg | image8 = File:Fm2s 008.jpg | image9 = File:Fm2s 009.jpg | image10 = File:Fm2s 010.jpg | footer_align = left}} {{multiple image|caption_align=center | align = center | direction = horizontal | header_align = center | image1 = File:Fm2s 011.jpg | image2 = File:Fm2s 012.jpg | image3 = File:Fm2s 013.jpg | image4 = File:Fm2s 014.jpg | image5 = File:Fm2s 015.jpg | footer_align </gallery>----<br><br>==Information about this unit/PCB== left}}I will slowly document this PCB and findings over time.