diff --git a/src/cljs/swinging_needle_meter/pen_trace_meter.cljs b/src/cljs/swinging_needle_meter/pen_trace_meter.cljs
new file mode 100644
index 0000000..661ec6f
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+++ b/src/cljs/swinging_needle_meter/pen_trace_meter.cljs
@@ -0,0 +1,43 @@
+(ns swinging-needle-meter.pen-trace-meter
+  (:require [re-com.core     :refer [h-box v-box box gap line label title slider checkbox p]]
+            [re-com.box      :refer [flex-child-style]]
+            [re-com.util     :refer [deref-or-value]]
+            [re-com.validate :refer [number-or-string? css-style? html-attr? validate-args-macro]]
+            [reagent.core    :as    reagent]))
+
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;;;;
+;;;; pen-trace-meter: an experiment in animating SVG from re-frame.
+;;;; Draws heavily on re-com..
+;;;;
+;;;; This program is free software; you can redistribute it and/or
+;;;; modify it under the terms of the GNU General Public License
+;;;; as published by the Free Software Foundation; either version 2
+;;;; of the License, or (at your option) any later version.
+;;;;
+;;;; This program is distributed in the hope that it will be useful,
+;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;;;; GNU General Public License for more details.
+;;;;
+;;;; You should have received a copy of the GNU General Public License
+;;;; along with this program; if not, write to the Free Software
+;;;; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
+;;;; USA.
+;;;;
+;;;; Copyright (C) 2014 Simon Brooke
+;;;;
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+
+;; ------------------------------------------------------------------------------------
+;;  Component: pen-trace-meter
+;; ------------------------------------------------------------------------------------
+
+(defn pen-trace-meter
+  [& {:keys [model width height min-value max-value]
+      :or {width          "100%"
+             height         "100%"
+             min-value      0
+             max-value      100
+             }}]
+   )