New Digital Micrometer 0-1" or 25.4mm $3.75 Shipped

[Geek1945]

Another eBay find:

My wife/CFO told me she's going to get me some horse blindsides because I continuity are looking for things to re-purpose. Hospitals are a modelers goldmine and 6% bleach will nuke any known germs. You're embarrassing Ed, no dear just saving the planet by recycling.

 

Now lets do some re-purposing to a common micrometer, well it's in disguise as a tire depth gauge, even better you won't even need to go get it. Just look here:

Digital depth gauge caliper tread depth gauge LCD Tyre tread gauge N3

Large LCD display
Zero setting at any position
Metric / Inch Display
on / off switch manually
Suitable for wear tread depth, brake shoe and pad
Digital depth gauge caliper tread depth gauge LCD Tyre tread gauge
Technical specifications:
Area: 0-25.4mm / 0-1 "
Display resolution: 0.01 mm / 0.0005 "
Oper : 0-40°C
Battery: SR44 / LR44, 1.5V
Size: about 11 x 6 x 1.2 cm
How to use:
(1) - (6) please see the picture.
Install the battery in (2), + side up
Switch ON (4)
Put (5) on a flat object and press bar (1) downward
put up ZERO (3)
Put doctrine on tires, keep them stable and push bar top (6) in the tread
Read tread depth value directly
Off (4) or more
important:
Hold the meter clear
No water oil on Bar (1)
Remove the battery when not used for a longer time
The indicator flashes when the battery is low
Display unintentional mistakes: removed the battery for 30 seconds
Package Included: 1x Digital Depth Gauge
Note:Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3 cm. (REALLY?)

   

Check out measurement error of +/- 1-3 cm compared to below

How about those LR-44 batteries:

New 50pcs x AG13 LR44 357 A76 Button Cell Battery For Clocks Watches Calculators

$2.84 shipped