In the Nikkormat FTn camera, if a 1.55 volt battery is substituted for the required 1.35 volt battery, will that result in under or over exposure? - Quora
Nikon FTN 35mm Camera With Nikon 50mm 1:2 Lens.Tested/Working.Battery Included | eBay
Nikon Nikkormat FTN – Kamerastore
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Nikkormat FT-2: Small changes, big improvement – - Daniel J. Schneider
NIKON F PHOTOMIC FTN, TN METER PRISM BATTERY ADAPTER | eBay
The Case for the Nikkormat FTN as Vacation Camera | Bill Smith | Film Shooters Collective