Berkshire Insulator Gallery (BIG)

Click on images below to enlarge.

ID	Cap Markings		Bell Markings		Side	Bottom	Other
PW1	K36	985	SAMPLE TRIANGLE NGK JAPAN 87
PW2	K36	80?	36000LB M-E 18000LB TEST TRIANGLE NGK JAPAN 87
PW3	LAPP E-11535M	DELTA DL-03-001? TUPV 071281	LAPP 1982 10,000 TEST
PW4	BTC		LAPP 1973 15000LB TEST	30000LB M&E
PW5	LAPP E-316775	65 42 12 11 08 93	20000LB M&E 10000LB TEST LAPP 1994 USA
PW6	XM 90952-16	US PAT 3024305? OB	8 OB 2 15K TEST
PW7	0909 87 382-K	TUPY 3 84-04-035	02-88 USA 8	LOCKE 25000 TEST 50000 M&E
PW8	186?	K50	13-85 USA 47	LOCKE 25000 TEST 50000 M&E
PW9	850	K50	13-65 USA 49	LOCKE 25000 TEST 50000 M&E
PW10	04-024 050592?	362	19-90 USA 7	LOCKE 20000 TEST 40000 M&E
PW11	K50	25?	41-85 USA 3	LOCKE 25000 TEST 50000 M&E
PW12	BTC		LAPP 1972 15000LB TEST	30000LB M&E
PW13	P90952-5	US PAT 3024303	6 OB 6 25000 47410
PW14	0919 95386-K	GE USA	GE 25000 TEST	062E? ??
PW15	IC-80 5000 TEST	18 LOCKE 74480	21-80
PW16	5000 TEST 10000 M&E ABC
PW17	92983-6 Circle-B	US PAT 3028303 10000LB