Leather apron

[Toolmaker51]

rendo!
Suggestion, yours is like a blacksmiths apron; the idea of a pocket is good.
On a machinists apron the pocket is 'hinged' so to speak. The pocket is double sided, back a little longer at top edge. That part is where the attachment is made. When you lean over it hangs perpendicular so your micrometer, scale, scribe, etc doesn't fall out.