0001005150-97-000086 SC 13G 1 19970214 NASD CENTRAL SPRINKLER CORP 0000766041 3490 232328106 PA 1031 SC 13G 34 005-37077 97534886 451 N CANNON AVE LANSDALE PA 19446 2153620700 451 N CANNON AVE LANDSDALE PA 19446 INVESTMENT COUNSELORS OF MARYLAND INC 0000051964 0000 520953533 MD 1231 SC 13G 803 CATHEDRAL ST BALTIMORE MD 21201 4105393838 803 CATHEDRAL STREET BALTIMORE MD 21201 SC 13G 1 000100515097000086-001-seq1-sc-13g.txt SCHEDULE 13G