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The only analog instrument here you can check and correct

LittleGood HMTMHY-WT

A 5.9-inch analog dial reading −30 to +50 °C (122 °F) and 10 to 100 per cent humidity, with a calibration screw on the back.

LittleGood 6-inch analog wall thermometer and hygrometer with white ABS case

LittleGood HMTMHY-WT

A 5.9-inch analog dial reading −30 to +50 °C (122 °F) and 10 to 100 per cent humidity, with a calibration screw on the back.

Type
Analog — no batteries
Dial
5.9 in / 15 cm diameter, large black numerals
Temperature
−30 to +50 °C (122 °F) / −20 to +120 °F, accuracy ±2 °C (36 °F) / ±3.6 °F
Humidity
10 to 100%, accuracy ±5%
Calibration
Adjustment screw on the back for the temperature
Scales
Both Fahrenheit and Celsius, color-coded dial
Mounting
Supplied stand, or wall mounting hole
Case
White ABS
Refresh rate
Not applicable — analog
Amazon reference
B09P37W7CY
EAN
0613965381178
  • The only analog instrument on this shelf that publishes both tolerances and includes a calibration screw
  • A 5.9-inch dial with large numerals, readable across a room, which no digital display here matches for size
  • ±2 °C (36 °F) is the loosest temperature tolerance published on this shelf

Best for: A wall in a garage, porch or workshop, read from across the room, with no battery to change

≈ $14
Check price on Amazon

Specifications

Type
Analog — no batteries
Dial
5.9 in / 15 cm diameter, large black numerals
Temperature
−30 to +50 °C (122 °F) / −20 to +120 °F, accuracy ±2 °C (36 °F) / ±3.6 °F
Humidity
10 to 100%, accuracy ±5%
Calibration
Adjustment screw on the back for the temperature
Scales
Both Fahrenheit and Celsius, color-coded dial
Mounting
Supplied stand, or wall mounting hole
Case
White ABS
Refresh rate
Not applicable — analog
Amazon reference
B09P37W7CY
EAN
0613965381178

What the maker puts in writing

  • Analog, 5.9 in / 15 cm dial, no batteries
  • −30 to +50 °C (122 °F) / −20 to +120 °F, ±2 °C / ±3.6 °F
  • Humidity 10 to 100%, ±5%
  • Adjustment screw on the back for calibration
  • Stand or wall mount · white ABS case

The only analog here you can correct

Three instruments on this shelf run without batteries. Two of them are German, well made, and silent about both their accuracy and how to adjust them.

This one publishes ±2 °C (36 °F) and ±5 per cent, and puts a screw on the back. That is a complete instrument: a reading, an error bar, and a way to fix the error.

Size as a specification

Six inches of dial with large black numerals, which the listing frames plainly as being for older eyes.

Nine devices on this shelf and the digital ones top out at a 2.3-inch LCD. For a garage wall read from the doorway, the dial wins on the one thing that matters there.

Availability

Read on the day this page was built: $14 at the American Amazon shop.

Read from Keepa on the day this page was last revised; stock and price both move without notice.

Prices quoted in this text were read on 2026-10-04. The live price is at the top of the page.

The questions that keep coming up

Why does the calibration screw matter?

Analog instruments drift. A screw on the back lets you set the needle against a known reference instead of living with the error. Three instruments on this shelf are analog and this is the only one with an adjustment — the two German ones do not mention calibration at all.

Is ±2 °C (36 °F) good enough?

For deciding whether a garage is freezing, yes. For anything finer, no: a seven-dollar digital unit on this shelf publishes ±1 °F, which is roughly four times tighter. What this dial buys is size and independence from batteries.

How does it compare with the TFA instruments here?

This one publishes both tolerances, its full range and a calibration screw, and costs about a third as much. The TFAs offer German manufacture, a named synthetic-hair element and, on one of them, the optimal ranges to aim for. Neither publishes an accuracy.

More thermo-hygrometers

  • Reed 8706 digital psychrometer and thermo-hygrometer with dual-line LCD

    Reed 8706

    A digital psychrometer displaying humidity, temperature and dew point or wet bulb together, with Max/Min/Avg and data hold.

    Displays
    %RH, temperature and dew point or wet bulb, simultaneously
    Readings
    Max, Min and Average
    Data hold
    Yes
    External probe
    Optional 87P6, for contact and differential temperature
    Units
    User-selectable °F / °C
    Power
    Batteries; low-battery indicator and auto shut-off
    Stated uses
    Environmental studies, food distribution, HVAC/R installation, greenhouses, industrial spaces, saunas, humidors, museums, lab monitoring
    Accuracy
    Not stated by the maker
    Range
    Not stated by the maker
    Amazon reference
    B0C6BJ612L
    EAN
    0800837000057
    • Shows humidity, temperature and dew point or wet bulb on screen at the same time — the only instrument on this shelf that does
    • An optional external probe for contact and differential temperature, which no other device here offers
    • No accuracy and no measurement range published anywhere in the listing

    Best for: HVAC work, a humidor, a museum case or a greenhouse, where dew point matters and the reading has to be recorded by hand

    ≈ $125
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  • TempPro TempAir digital hygrometer and indoor thermometer with wide LCD display

    TempPro TP53

    A digital hygrometer accurate to ±2 °F with all-time and 24-hour high and low records and a touch-activated backlight.

    Temperature accuracy
    ±2.0 °F (±1.1 °C)
    Humidity accuracy
    ±2 to 3% RH
    Refresh
    Every 10 seconds
    Records
    All-time and 24-hour high and low, stored and displayed
    Comfort indicator
    Yes
    Backlight
    Touch-activated, via a button below the display
    Mounting
    Holder, hanging hole and magnetic back
    Range
    Not stated by the maker
    Logging
    High and low only — no curve or export
    Amazon reference
    B079N98K93
    EAN
    6971604200285
    • The only device on this shelf that keeps high and low records — both 24-hour and all-time — without needing an app
    • Publishes both tolerances, with the humidity figure tighter than two cheaper devices here
    • A ten-second refresh, the slowest of the three published on this shelf

    Best for: A nursery, cellar or greenhouse where the overnight low matters more than the live reading

    ≈ $16
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  • TFA Dostmann analog thermometer and hygrometer with metal ring bezel

    TFA 45.2024

    A German-made analog thermo-hygrometer with a metal ring, publishing the optimal indoor ranges it is read against.

    Type
    Analog — no batteries
    Case
    Metal ring
    Origin
    Completely made in Germany
    Comfort zones
    Marked on the dial
    Stated targets
    Optimal temperature 18–22 °C (64 to 72 °F); optimum humidity 40–60%
    Mounting
    For hanging, indoors only — house, basement or garage
    Temperature accuracy
    Not stated by the maker
    Humidity accuracy
    Not stated by the maker
    Amazon reference
    B0044XII3A
    EAN
    4009816020284
    • The only listing on this shelf that publishes the target ranges — 18 to 22 °C (64 to 72 °F) and 40 to 60% RH — so the reading means something without looking it up
    • A metal ring rather than a plastic bezel, and German manufacture, both stated
    • No accuracy figure for either measurement

    Best for: A hallway or a cellar wall, for someone who wants the comfort band marked rather than calculated

    ≈ $37
    Check price on Amazon

Elsewhere in the spares drawer

  • Bosch original replacement filter 2-pack for the Dry series dehumidifiers

    Bosch Original Filter for Dry Series (2-Pack)

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    Compatible models
    Bosch Dry 1000, Dry 2000, Dry 4000
    Pack size
    2 filters
    Source
    Official Bosch part
    EAN
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    • Official Bosch part, matching the model reviewed on this site exactly
    • Confirmed with a live offer and multiple sellers (5) on Amazon.de
    • We found a matching listing on Amazon.fr but did not verify a live offer there at the time of checking

    Best for: Bosch Dry 4000 owners who want the manufacturer's own filter rather than a third-party alternative.

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  • ChiliTec ST35 plug-in outlet thermostat with analog rotary dial

    ChiliTec ST35

    ChiliTec's ST35 is an analog plug-in thermostat rated 230 V, max. 16 A / 3,500 W, switching a connected heater or fan on and off around a 5–30 °C (41 to 86 °F) setpoint in 1 °C steps. A slide switch sets heating or cooling mode, and the sensor is built into the plug itself rather than an external probe.

    Max. load
    230 V, 16 A, max. 3,500 W — stated by ChiliTec
    Temperature range
    +5 °C (41 °F) to +30 °C (86 °F), adjustable in 1 °C steps
    Switching behavior
    ±1 °C (34 °F) threshold, 10-second measurement interval, with a delayed reading ChiliTec says is meant to stop the relay tripping on a passing draft
    Mode switch
    Slide switch between heating and cooling; the connected device is driven in whichever mode is selected
    Sensor
    Internal — reads the air at the plug, not a remote probe
    Protection rating
    IP20, indoor use only
    Dimensions / weight
    H 128 × W 68 × D 39 mm (5.04 × 2.68 × 1.54 in) as plugged in; 190 g
    Amazon reference
    B01MZFKWS5 (EAN 4250416312457) — live offer confirmed on DE/FR/IT/ES; listed with no live offer on GB, no ASIN found on US, at check time
    • 3,500 W / 16 A rating is published by name, not left to be inferred from the plug
    • A heating/cooling slide switch means the same unit can drive a fan or a cooling device, not only a heater
    • Internal sensor only — it reads the air right at the socket, which runs warmer than the middle of the room once a heater has been on for a while

    Best for: Adding a numeric-ish setpoint to a heater or fan that only has a low/medium/high dial, in a dry room where the socket sits close to where you actually want the temperature held.

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  • Aygrochy black 150 mm flexible exhaust hose with two stainless-steel hose clamps

    Aygrochy 150 mm (5.91 in), Black

    A 150 mm (5.91 in) exhaust hose Aygrochy states at 153 mm (6.02 in) diameter and up to 3 meters (10 ft) long, built from a PVC membrane, steel wire and a double aluminum-foil layer, rated -30°C (-22 °F) to +100°C (212 °F) and stated to pass the GB8624 B1 combustion test. Ships with two stainless-steel hose clamps. Aygrochy markets it as a universal fit rather than for one declared appliance model.

    Diameter
    153 mm (6.02 in), per Aygrochy
    Length
    Up to 3 m (10 ft)
    Material
    PVC membrane, steel wire and a double layer of aluminum foil
    Temperature range
    -30 °C (-22 °F) to +100 °C (212 °F), stated to pass the GB8624 B1 combustion test
    Included hardware
    2 stainless-steel hose clamps
    Color
    Black
    Amazon reference
    B0BQJ1SLYP (identical on DE/FR/IT/ES; no EAN published)
    • Confirmed with a valid New-condition price on all four European markets checked (DE, FR, IT, ES), each with 2 active seller offers at the time of checking
    • Wider published temperature range (up to +100 °C (212 °F)) than the HG Power or FanGoFast hoses in this hub, plus a stated GB8624 B1 combustion-test pass
    • No declared compatibility with any specific appliance model — it is sold by diameter (153 mm (6.02 in)), not by machine

    Best for: A short universal 150 mm (5.91 in) hose run, for a buyer who wants a stated fire-test result and doesn't need more than 3 m (10 ft) of reach.

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All thermo-hygrometers