Bad Depth Mic

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BRIAN

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To help in setting the valve lash on my 5 cylinder radial engine. I ordered a depth mic.
from Chronos UK the item that arrived has a 12 mm dia hole over 1mm deep around the mandrel so it cannot measure small items Useless for the job intended and to dear to post back from Italy. May be I can get some use from it but I have never seen one made like this before.
Not a happy bunny.P1013327.JPG

Brian.
 
I have never seen one counterbored like that before either.
 
bad design there..looks almost like a chinese job !
1) make a plate/shoe for the base, (thick shim stock) with the correct hole in it, super glue it and know that your measurements are off by that amount
or
2) just fill in with an epoxy material, level, probably a fine file will do, and use as is

If the rest of it seems well made and accurate, would seem a waste to put it in the whatever drawer and "fogetaboutit"
:coffee break:
 
Keep us posted about your radial build. Your work on it looks really nice.
 
Hi Juiceclone
Yes I am looking for a piece of 1mm gauge plate so with the plate in place all I have to do is take 1mm off the reading
It reads OK on anything that bridges the hole.

Groundhog just look in at the thread and feel free to join in, I like company . Questions and comments are welcome, It keeps my mind awake.
Brian.
 
I have a set of cheap feeler gauges that I cut up and use for shims and such.
 
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