Photographers' Formulary 12" Glass Thermometer Combined Scale 0-230°F
A 12 inch glass thermometer covering 0 to 230 degrees Fahrenheit for precise darkroom temperature control
- Accurate readings for darkroom chemistry with 0 to 230°F range
- Durable glass construction resists chemical exposure during processing
- 12-inch length fits standard developing tanks and trays
- Combined scale shows both Fahrenheit and Celsius for convenience
- Precise 304.80 mm calibration ensures consistent temperature control
12-inch glass thermometer for film processing
The Photographers' Formulary thermometer is a 12-inch glass instrument with a combined scale reading from 0 to 230 degrees Fahrenheit. It is built for photographers who need accurate temperature control during film developing and darkroom chemistry preparation.
Replaces guesswork and uncalibrated alternatives
This thermometer upgrades from improvised methods such as kitchen probes or unmarked glass tubes that cannot cover the full developing range. The jump is worth it when consistent results across multiple processing sessions are required for professional or archival work.
Verify your chemistry temperature requirements
Check that your developer and fixer specifications fall within the 0 to 230 degree Fahrenheit span before ordering. Ensure your processing vessels can accommodate a 12-inch probe and that glass construction is compatible with your darkroom safety protocols.
How it compares
Measured against everything we stock in Photo Film & Film Cameras, at today’s prices. Recalculated every night.
- Price $25.99
- Cheaper than about 84% of the 749 comparable items (median $70.99).
Specifications
No published specifications for this item yet.
Questions about this item
How long is the 12" glass thermometer and will it fit in my developing tray?
The thermometer measures 12 inches (304.80mm) end to end, so check your tray depth against that length before ordering.
Does the combined-scale thermometer need any calibration or mounting hardware before first use?
No calibration or brackets are required — simply lower the glass stem into the solution until the liquid column stabilises at the true temperature.
If the glass column separates or the 0-230°F scale fades, can I replace just the thermometer?
The unit is a single sealed glass instrument; a separated column or worn scale means the whole thermometer must be replaced.
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