Model name of your large format enlarger please

[Keith Pitman]

Its a piece of foam tubing. The Zone VI/Calumet LED head has a cooling fan in it, with the air blowing out on the left. Attaching the foam tubing to that opening reduces the fan noise to near zero

Cool!

[seall]

I got the Zone VI type 2 part. What the hell is a digital head to easel and focus distance on a split 8 Digit Seven Segment Display?

The left digits are the height from the easel to the head and the right digits show the length of the bellows for focus, both are in cm to one decimal place. I prefer to note these two figures rather than take a reading from the column. When not being used it reverts to a 24hr clock. The sensors are ultrasonic with slightly different sampling systems for each one since one only needs to measure a small distance.

The unit uses a dht22 to correct for temperature and humidity in order to account for variations in the speed of sound due to changing conditions in the room.