<PAGE> PAGE 1
000 B000000 04/30/2000
000 C000000 0000316762
000 D000000 N
000 E000000 NF
000 F000000 Y
000 G000000 N
000 H000000 N
000 I000000 6.1
000 J000000 A
001 A000000 TRIDAN CORP
001 B000000 811-3056
001 C000000 2123712100
002 A000000 477 MADISON AVENUE
002 B000000 NEW YORK
002 C000000 NY
002 D010000 10022
003 000000 N
004 000000 N
005 000000 N
006 000000 N
007 A000000 N
007 B000000 0
007 C010100 1
007 C010200 2
007 C010300 3
007 C010400 4
007 C010500 5
007 C010600 6
007 C010700 7
007 C010800 8
007 C010900 9
007 C011000 10
008 A000001 MORGAN GUARANTY TRUST COMPANY
008 B000001 A
008 C000001 801-21011
008 D010001 NEW YORK
008 D020001 NY
008 D030001 10019
010 A000001 YOHALEM GILLMAN & COMPANY LLP
010 C010001 NEW YORK
010 C020001 NY
<PAGE> PAGE 2
010 C030001 10022
013 A000001 LESLIE SUFRIN AND COMPANY, PC
013 B010001 NEW YORK
013 B020001 NY
013 B030001 10016
015 A000001 MORGAN GUARANTY TRUST COMPANY OF NEW YORK
015 B000001 C
015 C010001 NEW YORK
015 C020001 NY
015 C030001 10019
015 E010001 X
018 000000 Y
019 A000000 N
019 B000000 0
022 A000001 POWER AUTHORITY STATE OF NY
022 C000001 4880
022 D000001 6839
022 A000002 TRIBOROUGH BRIDGE & TUNNEL
022 C000002 4194
022 D000002 1564
022 A000003 NEW YORK STATE URBAN DEV
022 C000003 2123
022 D000003 0
022 A000004 METROPOLITAN TRANSPORTATION AUTH
022 C000004 1039
022 D000004 1038
022 A000005 CITY OF NEW YORK GEN'L
022 C000005 1014
022 D000005 3105
022 A000006 NEW YORK STATE ENVIRONMENTAL PURP
022 C000006 527
022 D000006 1327
022 A000007 ILLINOIS STATE SCHOLARSHIP
022 C000007 611
022 D000007 257
022 A000008 BEAR STEARNS SECURITIES CORP
022 C000008 1042
022 D000008 837
022 A000009 NYS GENERAL PURPOSE UNLIM. TAX
022 C000009 0
022 D000009 739
022 A000010 MONROE COUNTY INDUSTRIAL DEV
022 C000010 227
022 D000010 371
023 C000000 19188
023 D000000 19306
024 000000 N
026 A000000 N
026 B000000 N
026 C000000 N
026 D000000 Y
<PAGE> PAGE 3
026 E000000 N
026 F000000 N
026 G010000 N
026 G020000 N
026 H000000 N
027 000000 N
045 000000 Y
046 000000 N
047 000000 Y
048 000000 0.280
048 A010000 0
048 A020000 0.000
048 B010000 0
048 B020000 0.000
048 C010000 0
048 C020000 0.000
048 D010000 0
048 D020000 0.000
048 E010000 0
048 E020000 0.000
048 F010000 0
048 F020000 0.000
048 G010000 0
048 G020000 0.000
048 H010000 0
048 H020000 0.000
048 I010000 0
048 I020000 0.000
048 J010000 0
048 J020000 0.000
048 K010000 0
048 K020000 0.000
049 000000 N
050 000000 N
051 000000 N
052 000000 N
053 A000000 N
054 A000000 N
054 B000000 Y
054 C000000 N
054 D000000 N
054 E000000 N
054 F000000 N
054 G000000 N
054 H000000 N
054 I000000 N
054 J000000 N
054 K000000 N
054 L000000 N
054 M000000 Y
054 N000000 N
<PAGE> PAGE 4
054 O000000 Y
055 A000000 N
055 B000000 N
056 000000 Y
057 000000 N
058 A000000 N
059 000000 Y
060 A000000 N
061 000000 0
062 A000000 Y
062 B000000 0.0
062 C000000 0.0
062 D000000 0.0
062 E000000 4.0
062 F000000 0.0
062 G000000 0.0
062 H000000 0.0
062 I000000 0.0
062 J000000 0.0
062 K000000 0.0
062 L000000 0.0
062 M000000 0.0
062 N000000 0.0
062 O000000 96.0
062 P000000 0.0
062 Q000000 0.0
062 R000000 0.0
063 A000000 0
063 B000000 5.4
064 A000000 Y
064 B000000 N
066 A000000 N
067 000000 N
068 A000000 N
068 B000000 N
069 000000 N
071 A000000 9939
071 B000000 10700
071 C000000 37798
071 D000000 26
072 A000000 12
072 B000000 1943
072 C000000 0
072 D000000 0
072 E000000 0
072 F000000 105
072 G000000 72
072 H000000 0
072 I000000 0
072 J000000 0
072 K000000 0
<PAGE> PAGE 5
072 L000000 0
072 M000000 52
072 N000000 0
072 O000000 0
072 P000000 0
072 Q000000 0
072 R000000 13
072 S000000 57
072 T000000 0
072 U000000 0
072 V000000 0
072 W000000 9
072 X000000 308
072 Y000000 0
072 Z000000 1635
072AA000000 0
072BB000000 94
072CC010000 0
072CC020000 1753
072DD010000 1705
072DD020000 0
072EE000000 177
073 A010000 0.5400
073 A020000 0.0000
073 B000000 0.0600
073 C000000 0.0000
074 A000000 1493
074 B000000 0
074 C000000 0
074 D000000 35018
074 E000000 0
074 F000000 0
074 G000000 0
074 H000000 0
074 I000000 0
074 J000000 0
074 K000000 0
074 L000000 698
074 M000000 0
074 N000000 37209
074 O000000 0
074 P000000 0
074 Q000000 0
074 R010000 0
074 R020000 0
074 R030000 0
074 R040000 84
074 S000000 0
074 T000000 37125
074 U010000 3136981
074 U020000 0
<PAGE> PAGE 6
074 V010000 11.85
074 V020000 0.00
074 W000000 0.0000
074 X000000 182
074 Y000000 0
075 A000000 0
075 B000000 37798
076 000000 11.85
077 A000000 Y
077 B000000 Y
077 O000000 N
078 000000 N
080 A000000 VIGILANT INSURANCE COMPANY
080 C000000 350
081 A000000 N
081 B000000 0
082 A000000 Y
082 B000000 10
083 A000000 N
083 B000000 0
084 A000000 N
084 B000000 0
085 A000000 N
086 A010000 0
086 A020000 0
086 B010000 4560
086 B020000 54
086 C010000 0
086 C020000 0
086 D010000 0
086 D020000 0
086 E010000 0
086 E020000 0
086 F010000 0
086 F020000 0
SIGNATURE JOSEPH SCIALO
TITLE PARTNER