calibcant/procedure.tex: Over-estimate port-to-chip distance

I'd like to actually measure this, but I forget when I'm in lab.  The
whole fluid chamber is about a centimeter in diameter, so 3 mm seems
like a safe upper bound.

diff --git a/src/calibcant/procedure.tex b/src/calibcant/procedure.tex
index ce8717fb9075e4f254532e04f2c80ae88e7f941b..0e9ca4a5de9839d8787b60452804ca7931f09dd0 100644 (file)
--- a/src/calibcant/procedure.tex
+++ b/src/calibcant/procedure.tex
@@ -99,8 +99,8 @@ a type E thermocouple\footnote{Part number 5TC-TT-E-30-72 from OMEGA
   insulation (TT), type E metals (chromel--constantan), number 30 AWG
   wires ($0.255\U{mm}$ diameter), in a $72\U{inch}$ length.}.  The
 thermocouple is inserted through one of the ports in the AFM fluid
-cell, so the thermocouple tip is in the buffer less than $TODO\U{mm}$
-from the cantilever tip.
+cell, so the thermocouple tip is in the buffer less than $3\U{mm}$
+from the cantilever tip.% TODO: measure distance
 
 \Cref{eq:kappa} depends on the \emph{absolute} temperature, so labs
 without easy access to a thermocouple can probably get away with