I'm having trouble finding a specific spell I know I read somewhere in an official Paizo source.
It was (I believe) a divination spell which allowed a caster to touch a wall and tell how far it was until the next open space.
Any help on figuring out what this spell was would be much appreciated.
I've tried using the Spell DB, but I still can't seem to find it!
I can't find an exact spell like that, but there is Arcane Eye
Arcane Eye
Level Sorcerer 4 , Wizard 4
Classification Divination (Scrying)
Saving throw None
Range Unlimited
Target Magical sensor
Components V, S, M
Casting Time 10 minutes
Duration (Caster Level) minutes [D]
Spell Resistance No
Source
Pathfinder Roleplaying Game Core Rulebook p.243
Effect You create an invisible magical sensor that sends you visual information.
Description
You create an invisible magical sensor that sends you visual information. You can create the arcane eye at any point you can see, but it can then travel outside your line of sight without hindrance. An arcane eye travels at 30 feet per round (300 feet per minute) if viewing an area ahead as a human would (primarily looking at the floor) or 10 feet per round (100 feet per minute) if examining the ceiling and walls as well as the floor ahead. It sees exactly as you would see if you were there.
The eye can travel in any direction as long as the spell lasts. Solid barriers block its passage, but it can pass through a hole or space as small as 1 inch in diameter. The eye can't enter another plane of existence, even through a gate or similar magical portal.
You must concentrate to use an arcane eye. If you do not concentrate, the eye is inert until you again concentrate.
There's a clerical power in one of the travel sub schools that allows you to see through doors/walls to a limited degree.
Do you remember any thing else about it like what level you think it was or what class or classes could cast it?
determine depth from the Dungeoneer's Handbook. is probably the spell you are looking for.
That's the one! Thanks! Makes so much sense it is in the Dungeoneer's Handbook.