SeattleMatt,
As MWG suggests, the one on the left, (marked Original Dipstick Mercedes Benz) has the correct measurement scale for your
2008 Sprinter with the 5G-Tronic/NAG-1 5 speed transmission.
I've said it before, and I'll say it again, the OEM Dipstick (at an authorized Mercedes Benz Sprinter dealer Parts Counter) is
around $60.00.
An aftermarket OEM style trans dipstick costs $29.97 + a little for shipping!
https://europarts-sd.com/2002-2009transmissionservicedipstick.asp
Note: Read the text in red print on the above link......the amount of coiled spring extension above the top of the dipstick tube
simply does NOT matter!
Why everyone seems to want to go for the cheapest tool to measure the fluid level in a transmission that costs $2500 to $3000
PLUS installation for a rebuilt Silver Star unit with some warranty
www.silverstartransmission.com
or significantly more for a factory re-manufactured transmission from an authorized Mercedes-Benz or Freightliner Sprinter
dealer.
Why people want to save a few $$ on the primary tool to ensure the long term health of a $3,000.00 + transmission simply
does not compute in my mind.
Get the right dipstick, read the manufacturer's (and the retail sellers) blurbs on how to use it, replace the fluid with the genuine
Mercedes Benz BEVO approved fluid for your year model Sprinter, and have the transmission serviced at the recommended
(in your owners or service manual, usually ~ 50k-60K miles) or DIY and these transmission last a very long time.
Run them low on fluid, or use the wrong fluid and the $$ saved on buying the OEM (or correct facsimile) dipstick will definitely
seem penny wise/pound foolish.
Hope this helps,
Roger