Looking for a couple of things.....

[slow-poke]

+ Pairs of parallels for milling machine, something close to 1/2"
+ Quality tap handle (Greenfield #4 or similar) about 9" long

 

[YotaBota]

Are you looking for 1/2" width or depth? For a standard parallel set you could try these.

WEN 1/8 in. Precision-Ground Parallel Gauge Sets with Case (20-Piece) | The Home Depot Canada

Remember when you had maximum precision. The WEN 10-Pair Precision-Ground 1/8 in. Parallel Gauge Block Set provides machined accuracy and reliability all in the palm of your hand. Each steel block has been machined exactly to its claimed dimensions to within two 10000 in., making these the...

www.homedepot.ca

Lots of videos on making tap handles if you have the machinery.

 

[Crankit]

If you're wanting a decent GTD handle, look at old T&D sets on Kijiji or MP that have the handles in the set. They are way cheaper than buying the handles on ebay.

 

[slow-poke]

Are you looking for 1/2" width or depth? For a standard parallel set you could try these.

WEN 1/8 in. Precision-Ground Parallel Gauge Sets with Case (20-Piece) | The Home Depot Canada

Remember when you had maximum precision. The WEN 10-Pair Precision-Ground 1/8 in. Parallel Gauge Block Set provides machined accuracy and reliability all in the palm of your hand. Each steel block has been machined exactly to its claimed dimensions to within two 10000 in., making these the...

www.homedepot.ca

Lots of videos on making tap handles if you have the machinery.

I have a full set of the thin parallels (similar to your image) as well as a set of 1/8" thick but only a few thicker ones that are about ~1/2" x 1" x 6", I could use a pair or two of something about 3/8 - 1/2" thick x 1" x 6"

 

[Tom Kitta]

I have multiple sets of parallels - I can sell one. they are 1/4 in. I am in Calgary so this may not work.

You can get 1/8 from Amazon.ca but for thicker stuff maybe eBay or local auctions are better.

 

[slow-poke]

+ Pairs of parallels for milling machine, something close to 1/2"
+ Quality tap handle (Greenfield #4 or similar) about 9" long

Update Feb 12-2023:
- Starrett 91B handle should be here in a day or two so scratch that, although I might still take on a smaller one like a 91A
- Looking for a good quality 4" milling vise: Kurt, Tegara, Glacern, Homge etc. Prefer one that opens more than 4" like the Tegara

 

[slow-poke]

Update Feb 19-2023:
- Starrett 91B handle has arrived so scratch that.
- D40 4" Kurt milling vise is on the way so scratch that, might still consider a DX4. Tegara or Autowell that opens up to 6"

Calibration Spanner wrench for Mitutoyo 0-1" micrometer (no idea where it is after moving), someone might have a spare?

 

[Aliva]

Calibration Spanner wrench for Mitutoyo 0-1" micrometer (no idea where it is after moving), someone might have a spare?

make one