https://www.google.com/search?q=geometric+dimensioning+and+tolerancingOffhand, going from top to bottom, left to right:
- These are all in mm by default, by the way. There should also be a projection graphic (a cone frustrum) showing third angle projection. (American drawings are often inch and 1st angle, so watch for these features.)
- 0,65 = pin-to-pin spacing, on centers. Reference dimension, no tolerance. (A reference is toleranced by a separate declaration.)
- 0,30/0,19 = pin width, max/min.
- Crosshair 0,1 (M) = centering, circular, radial tolerance, maximum material condition (MMC). ("(L)" would be LMC.) This makes sense, as pins would be likely to bend in random directions, and you would expect maximum deflection at maximum length.
- Triangle D = this dimension with respect to datum D. Find the datum declaration elsewhere in the drawing.
- 4,5/4,3, 6,6/6,2 = max/min width of body and length of pins, respectively. Nice, the pin length spread isn't horrible, that means you don't need a lot of excess toe on the footprint.
- And 6,6/6,4 triangle C = you should be able to guess what this is now: body length with respect to datum C.
HTH,
Tim