I am writing this on a very warm March Day. Read on please.
On our crusted stone outside patio area, I have as above four recording thermometers. By recording I mean I am able to check on a saved maximum (and minimum) temperature. Each device detected a reading above seventy degrees.
Three of the four transmit the current temperature to a display inside. The fourth is a liquid double tube (an upside-down horseshoe) with two moving pegs. One peg goes up on the warm side and after the temp falls the maximum is shown. Same on the down cold side. After the coldest temperature is reached the peg shows what that cold reading was. With a magnet I am able to pull each peg back to the current reading. I must put that reading in my head until I get to my recording books. YES, at times when I get inside, I do not recall what one or the other reading was. AMEN and AMEN.
Acu - rite 75
Talylor (horseshoe) 73
Recording weather station 75.7
Taylor (transmitting) 74.5
Yes two of the four save the max/min accurate to tenths.
I believe this is the first time I wrote down all four readings inside of a two minute period.