This sale is for only one (1) of four (4) Brunson Metric Graduated Drum for Model 190 Optical Micrometer.
Can convert any standard Brunson Model 190 Optical Micrometer to measure in millimeters by replacing the standard graduated drum. Works in conjunction with any Brunson K&E Wyteface etc. 0.05mm optical scales (see sellers other sales).
I have four (4) for sale all original Brunson OEM parts. If purchased you will randomly receive one of the four drums pictured. These are vintage used parts but all are in good+ condition. Please see pictures for more details and condition.
Will also email photos of a cutaway side view of the micrometer and instructions for adjustments. Some tech support for change out of necessary.