diff --git a/extension/toar_controlled_vocabulary-0.1/toar_controlled_vocabulary--0.1.sql b/extension/toar_controlled_vocabulary-0.1/toar_controlled_vocabulary--0.1.sql
index 9e1b1944a1d101674e7b9b8919b487ce11f339cd..649864bae57e3144ce0ca4308c6c814d79420b30 100644
--- a/extension/toar_controlled_vocabulary-0.1/toar_controlled_vocabulary--0.1.sql
+++ b/extension/toar_controlled_vocabulary-0.1/toar_controlled_vocabulary--0.1.sql
@@ -287,6 +287,19 @@ INSERT INTO DL_vocabulary (enum_val, enum_str, enum_display_str) VALUES
     ( 16, 'Barren', '16  (Barren or sparsely vegetated)'),
     (255, 'Fill', '255 (Fill Value/Unclassified)');
 
+-- Measurement Methods
+
+CREATE TABLE IF NOT EXISTS MM_vocabulary (
+    enum_val         INT NOT NULL,
+    enum_str         character varying(128) NOT NULL, 
+    enum_display_str character varying(128) NOT NULL, 
+    PRIMARY KEY(enum_val, enum_str)
+);      
+
+INSERT INTO MM_vocabulary (enum_val, enum_str, enum_display_str) VALUES
+    (0, 'UVAbsorption', 'UV absorption'),
+    (1, 'UnknownInstrument', 'unknown instrument');
+
 -- Result Types
 
 CREATE TABLE IF NOT EXISTS RT_vocabulary (