We　investigated　angle-resolved　tuning　performance　of　the　double　resonance　modes　of　waveguide　metallic　grating　structures,　where　the　incident　angle　was　changed　in　the　plane　formed　by　the　extending　direction　of　the　grating　lines　and　the　wave　vector　with　the　grating　plane　tilted　with　respect　to　the　vertical　axis.　Double　resonance　modes　were　observed　due　to　tilting　of　the　grating,　which　were　tuned　simultaneously　to　the　blue　with　increasing　the　angle　of　incidence.　The　spectral　separation　between　the　resonance　modes　can　be　adjusted　simply　by　changing　the　tilting　angle　of　the　grating.　Such　a　double　resonance　device　is　important　for　exploring　multichannel　optical　filters,　optical　switching　device,　or　sensors.