View Full Version : what are these tray indents for?
On Paterson trays, there are three little angled indents in one corner. Anyone know what their purpose is?
RedGreenBlue
23-Oct-2018, 15:00
Just a guess. To anchor a thermometer? But also of course, to make cleaning the tray more of a chore.
Scott
Ironage
23-Oct-2018, 15:13
I like Scott's answer, but I always used them for tongs.
Just a guess. To anchor a thermometer? But also of course, to make cleaning the tray more of a chore.
Scott
Correct... Remember reading in the description of Paterson Developing Trays in a 47th Street Photo catalog from the 1970s, that they were there for holding a Paterson thermometer at an angle to monitor the temperature of the chemistry in the tray.
Oren Grad
23-Oct-2018, 15:22
From the Paterson catalog:
The moulding along one edge gives support to a thermometer allowing a constant check of solution temperature.
Duolab123
23-Oct-2018, 16:17
I loved seeing this. Of course it's for a thermometer, but I've used Paterson trays for 40 years, and I'm still looking for a thermometer that will balance in these slots with the correct immersion depth and don't fall out. 76mm is standard immersion depth for thermometers. I guess I need an official Paterson thermometer :)
And yes it makes them a pain to clean. I'm on a quest for the perfectly balanced thermometer, I will report back ;)
Best Mike
Tin Can
23-Oct-2018, 16:59
I imagined they were for sludge.
It seems to end up there.
Jac@stafford.net
23-Oct-2018, 18:16
On Paterson trays, there are three little angled indents in one corner. Anyone know what their purpose is?
Cigarette holder.
Steven Ruttenberg
23-Oct-2018, 18:52
Thermometer :)
Duolab123
24-Oct-2018, 20:25
I checked. Paterson makes what looks like a very nice spirit thermometer, 9 inches long, glass. I hate glass anything.
Steven Ruttenberg
24-Oct-2018, 22:39
I prefer my dedicated film developing metal thermometer with glow in the dark face. Need to get like 3 more and send em out to be calibrated. Works better than my glass one.
Mark Sawyer
24-Oct-2018, 23:56
To me, they always looked a bit Klingon in origin...
Oren Grad
25-Oct-2018, 07:55
I checked. Paterson makes what looks like a very nice spirit thermometer, 9 inches long, glass. I hate glass anything.
What they offer is two mercury thermometers, a 9-inch one intended for B&W and a 12-inch one with a longer scale intended for color.
mercury thermometers
Dump some hot water in the tray by accident and watch them go pop!
Duolab123
25-Oct-2018, 23:11
What they offer is two mercury thermometers, a 9-inch one intended for B&W and a 12-inch one with a longer scale intended for color.
The listing on B&H says mercury which has been banned in the EU for years, they are colored liquid spirit thermometers, still a pain.
Oren Grad
25-Oct-2018, 23:26
...mercury which has been banned in the EU for years...
Ah, good point!
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