Micrometer question

hello Rd6 plower ,found a video for the use of the micrometer ,bruce oz


http://www.youtube.com/watch?v=oHqaLMEHlnE






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So I was hoping to be reading it wrong but no i just have to go get one that reads up to 10 thousandths.😞 Thank you for helping me solve this problem.😄

There is never a reason to use a mike in tenths except if your a machinist and do very technical work that requires it. Years ago when I was employed at a machine shop we did some very delicate work for IBM I believe it was and we had specs for a couple jobs that required 3 tenths tolerance but that,s about the only ones I can remember I did.With lifters only thousands is all that,s required. I gave most my tools to my son when he was employed as a machinist but if I recall my depth mikes were a high priced brand name Starrett I believe and I don,t think they were calibrated for tenths. My one regular mike was and was an expensive set that I needed for the machine shop work.If your miking something for close tolerance if you breathe on it almost it can change it if your checking for tenths, (just kidding).I just checked the thickness of a news paper here and it was .002" so a tenth would be one 20th of that.

Bear in mind a depth mike reads a bit differently than an outside mike. An outside mike reads by the numbers and marks uncovered, a depth mike reads by numbers and marks covered. As far as tenths of a thousandth, just the heat of your hand can change readings so unless you're working in a perfectly temperature controlled environment (68°F) with insulated gloves, don't worry about it.

Thank you all for your comments!
Now it says in my service book says for checking the length of the plungers that they should be 2.6555"-2.6557" long that's what it told me so should I round it with my No.436 2"-3" Starrett outside micrometer? Or go buy a 10 thousandths micrometer? Isn't that scale called the vinere scale or something? My depth micrometer is a Proto 0"-6" with a 2" base now is that good enough for setting the lifters? I really appricate your guys advice!😄

Thank you all for your comments!
Now it says in my service book says for checking the length of the plungers that they should be 2.6555"-2.6557" long that's what it told me so should I round it with my No.436 2"-3" Starrett outside micrometer? Or go buy a 10 thousandths micrometer? Isn't that scale called the vinere scale or something? My depth micrometer is a Proto 0"-6" with a 2" base now is that good enough for setting the lifters? I really appricate your guys advice!😄

Yes the Proto mike should be good to check with as they are a good brand name and it seems if my memory is right that Proto replaced the old Plumb name tools. I always set the lifter setting 1 or 2 less than the spec. esp. with used pumps and screws and always worked out well.

Ya, your right about plomb tools my buddy Greg Gilles used to hunt for them at swap meets and stuff but me and him are on the Snap on train. It's nice that I talked the snap on truck into coming out to my house once a week.😄 I like my tools!

Now the 436 2-3" starrett will not work? It has a normal barrel and thimble but stamped towards the end of the thimble is two conversion charts from my under standing, 1/8" and 1/32" all the way around the thimble and it does not have a friction knob. It is the only one out of my set of Starrett's 1"-6" that is different all the others are the stanerd
micrometers from the 1950's or older.

So the proto will do far as being the right size, I don't know what my Grandpa Joe orignally bought it for but if I can use great.😊 Now while I got my mind on it would you happen to have the factory lifter specs from 5u thru 9u and are the 9u lifters set at the same as a 1v DW10?
Thanks JR Ponte

My Cat fuel inj. book shows the 5U thru the 9U as 1.736" setting for lifters and it only says the 4 1/2" bore 6 cyl. so I,m sure the DW 10 is the same setting 1.736" so that,s the same basic engine as the D6.Also remember each lifter to be set the engine has to be on TDC for that particular cyl. on the compression (firing stroke) and the 4 cyl firing order is 1-3-4-2 and the 6 cyl. is 1-5-3-6-2-4.