I got a package of five "Sharpie Precision" precision markers from Staples. Also marked "Ultra Fine". The package contained two black markers. The other ones were green, blue, and red.
The black marker draws a line 1/60 in. wide,, or 17 mil.
Heating season has begun, so today I started boiling water to add moisture to the air.
HTH,
Alan
The black marker draws a line 1/60 in. wide,, or 17 mil.
Heating season has begun, so today I started boiling water to add moisture to the air.
HTH,
Alan