diff --git a/Makefile b/Makefile
index c6a7bd7..9f46201 100644
--- a/Makefile
+++ b/Makefile
@@ -5,6 +5,7 @@ design: clean
 	cat design/metric_thread.csv | awk -f design/metric_thread.awk >> design/THREAD_TABLE.csv
 	cat design/PCO_thread.csv | awk -f design/PCO_thread.awk >> design/THREAD_TABLE.csv
 	cat design/UIS_thread.csv | awk -f design/UIS_thread.awk >> design/THREAD_TABLE.csv
+	cat design/microscope_thread.csv | awk -f design/microscope_thread.awk >> design/THREAD_TABLE.csv
 	cat design/THREAD_TABLE.csv | awk -f design/autogenerate.awk > THREAD_TABLE.scad
 
 .PHONY: test
diff --git a/THREAD_TABLE.scad b/THREAD_TABLE.scad
index 0e6faee..46e546f 100644
--- a/THREAD_TABLE.scad
+++ b/THREAD_TABLE.scad
@@ -1899,4 +1899,6 @@ THREAD_TABLE = [["G1/16-ext", [0.907, 3.1631, 6.3625, [[0, -0.4252], [0, 0.4252]
 ["32-UN-3/4-int", [0.79375, -9.5551, 19.1033, [[0, 0.3473], [0, -0.3473], [0.4296, -0.0992], [0.4296, 0.0992]]]],
 ["32-UN-13/16-ext", [0.79375, 9.8517, 19.7103, [[0, -0.2977], [0, 0.2977], [0.4296, 0.0496], [0.4296, -0.0496]]]],
 ["32-UN-13/16-int", [0.79375, -10.3492, 20.6914, [[0, 0.3473], [0, -0.3473], [0.4296, -0.0992], [0.4296, 0.0992]]]],
+["RMS-ext", [   0.7056,    9.5829,   19.1859, [[ 0.0,  -0.3274], [ 0.4932,  -0.0706], [ 0.4932,   0.0706], [ 0.0,   0.3273]]]],
+["RMS-int", [   0.7055,  -10.3042,   20.5085, [[ 0.0,   0.2630], [ 0.4808,   0.0127], [ 0.4808,  -0.0127], [ 0.0,  -0.2630]]]],
 ];
diff --git a/design/microscope_thread.awk b/design/microscope_thread.awk
new file mode 100644
index 0000000..5778c51
--- /dev/null
+++ b/design/microscope_thread.awk
@@ -0,0 +1,3 @@
+/^[^#]/ {
+	print $0;
+}
diff --git a/design/microscope_thread.csv b/design/microscope_thread.csv
new file mode 100644
index 0000000..58cd756
--- /dev/null
+++ b/design/microscope_thread.csv
@@ -0,0 +1,3 @@
+# Designator,Pitch ,     Rrot, Dsupport,  r0,      z0,     r1,      z1,     r2,      z2,  r3,      z3
+RMS-ext,   0.7056,   9.5829,  19.1859, 0.0, -0.3274, 0.4932, -0.0706, 0.4932,  0.0706, 0.0,  0.3273
+RMS-int,   0.7055, -10.3042,  20.5085, 0.0,  0.2630, 0.4808,  0.0127, 0.4808, -0.0127, 0.0, -0.2630