  This paper reports NMR measurements of the magnetic dipole moments of two
high-K isomers, the 37/2$^-$, 51.4 m, 2740 keV state in $^{\rm 177}$Hf and the
8$^-$, 5.5 h, 1142 keV state in $^{\rm 180}$Hf by the method of on-line nuclear
orientation. Also included are results on the angular distributions of gamma
transitions in the decay of the $^{\rm 177}$Hf isotope. These yield high
precision E2/M1 multipole mixing ratios for transitions in bands built on the
23/2$^+$, 1.1 s, isomer at 1315 keV and on the 9/2$^+$, 0.663 ns, isomer at 321
keV. The new results are discussed in the light of the recently reported
finding of systematic dependence of the behavior of the g$_{\rm R}$ parameter
upon the quasi-proton and quasi-neutron make up of high-K isomeric states in
this region.
