Are electronic basal thermometers different from ordinary electronic thermometers?

I’ve seen allusions to basal thermometers and looked them up online! The glass ones just look like normal glass thermometers except the scale is from 36 to 38 Celsius so gives more precision. Are the electronic basal thermometers different from ordinary electronic thermometers?

I read the documentation for the Geratherm glass basal thermometer. They discuss 4 methods: oral anal vaginal and axillary. Surprised that vaginal is presented, I thought this was fetish only! Probably less icky than rectal…

@Jacana

I am very sure that the difference is that a basal thermometer shows 2 decimal places, while a regular fever thermometer usually shows only one. Otherwise, they are essentially identical.

@lumara Ever used one? Are they that precise?

Yes, I own a few, but I have never used them to determine my fertility. They should at least be very accurate because otherwise, using the natural family planning method with a thermometer would be completely pointless.

If by “ electronic ” do you mean like an IVAC or FILAC unit? I think most are battery powered digital types. And there are non invasive devices that supposedly give measurements too.