Has spring loaded extending action just the like the Dr's
This was an essential tool for the Dr in his travels
Requires 3 PCS L1154 type batteries(included)
There are sound effects and sound and light!

Notes:

 

1.  Please allow 2-3% error due to manual measurement. Please make sure you do not mind before you bid. ( 1 inch = 2.54 cm )
2.  The colors may have different as the difference display, please understand.