diff --git a/README.md b/README.md
index 945d661..86f5317 100644
--- a/README.md
+++ b/README.md
@@ -59,6 +59,8 @@ The LCD shows the current state together with either the cycle counter
 
 ![LCD readout during a run](img/test-jig-display.jpg)
 
+(LCD case is [20x4 LCD Enclosure](https://www.printables.com/model/957374-20x4-lcd-enclosure))
+
 ## Software architecture
 This is a pattern that I find to work well for control system software on
 hosted systems (the Linux on the Raspberry Pi in this case).  It is not