Weck Razor, Military Background?

For a longer Time i have this nice all metal Weck Razor now and shaved with it yesterday (it was really a pleasure, a very nice shave).
All the Time i have it i wonder if it has a military Background and what the M.D. U.S.N. on the Scales might mean, does anyone have
a clue what this stamp stands for?

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M.D USN. Medical Department US Navy.

At a guess they would have been used to shave patients like Wapiencas did. They were all steel so they could be autoclaved.

Some good info on Edward Wreck here: http://wiki.badgerandblade.com/Edward_Weck_and_Co

Nice find with that Navy stamp:chapeau