Here’s a selection of traditional bar measures & Jiggers I previously used. >>
Covering variously from 15/25/30/35/45/50/125ml.
Downside is that an accurate measure is near full to brimming & it is all to easy to have some spillage wastage.
I’ve been using these now, fer t’ last several years & they are brilliant. Between them they have pretty much all bases covered for my needs.
OXO 3112600UK Steel Angled Measuring Jigger - Silver : Amazon.co.uk: Home & Kitchen
OXO Good Grips Mini Angled Measuring Jug - 60ml : Amazon.co.uk: Home & Kitchen
The steel one has 10/20/30/40/50/60ml graduations on one inner side & tablespoon (15ml) graduations on the other ranging from half a tablespoon (7.5ml) up to four & effectively covering 7.5/15/30/45/60 ml.
The plastic one covers more different measurement standards from 1 to 12 teaspoons (5ml increments), from half to 4 full tablespoons, up to 60ml in 10ml increments & usefully also going down to 5ml quite usefully & also very usefully if following cocktail recipes from some books or internet sources it also covers UK fluid ounces in a range from a quarter up to 2 fluid ounces.
One slight idiosyncrasy of the plastic one is that on the teaspoon scale is that 4teaspoons is pretty much bang on 25ml, not 20ml as it should be, but all the other scales seem accurate when I’ve decanted into other measures to check.
Definitely useful to have both, for if you are doing different drinks at the same time. They’re nice thoughtfully designed pieces of kit with good ergonomics & are very easy to use with the graduations always easy to read. With the thoughtfully provided lip/pouring spout & generosity of sizing they are near impossible to spill from unless you have pretty bad shakes.