Digital Tachometer Problems
#5
Vinny and Jack are correct. It needs a small piece of reflective tape and ideally, the part you are sticking the tape to should be painted black.

Also - the component being measured should be spinning Big Grin

You may also wish to consider adding one of these to your mini mill, as you would get immediate readings and not have to spend time marking out increments on the machine:

http://www.machtach.com/

Henry Arnold is a member here and there is a thread on these:

http://www.metalworkingfun.com/showthread.php?tid=1138
Hunting American dentists since 2015.
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Messages In This Thread
Digital Tachometer Problems - by Charles Spencer - 06-20-2015, 09:11 PM
RE: Digital Tachometer Problems - by Vinny - 06-20-2015, 09:44 PM
RE: Digital Tachometer Problems - by the penguin - 06-20-2015, 10:17 PM
RE: Digital Tachometer Problems - by oldgoaly - 06-20-2015, 10:16 PM
RE: Digital Tachometer Problems - by Mayhem - 06-20-2015, 11:27 PM
RE: Digital Tachometer Problems - by EdK - 06-21-2015, 08:48 AM
RE: Digital Tachometer Problems - by the penguin - 06-21-2015, 09:09 AM
RE: Digital Tachometer Problems - by Mayhem - 06-21-2015, 05:29 PM
RE: Digital Tachometer Problems - by the penguin - 06-21-2015, 05:42 PM



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