Below is a sketch of an unglazed gray stone-like porcelain used in the new triplex type secondary house drops as a spreader, so that taps can be made in the middle of the span for connections. I do not know who makes these, but I believe it is N G K, a Japanese company from which this power company now buys all their insulators.

1/21' wide and 5" high, 80% actual size.                                              

Below is a neon sign insulator. The neon tube went into the open end and contacted the spring. The insulator was inserted into the sign from the front and secured by the zinc collar.

P. S. Here is a porcelain insulator TRADE MARK GUIDE I thought your readers could use.

	Ohio Brass Company
	Ohio Brass, ST indicates silent type glaze
	I-T-E Imperial Corporation
	Lapp Insulator Co.
	Victor Insulator Co.
	Westinghouse (Some have an "E" under trade mark. This means "For Electric Service")
	Line Material Industries, Inc.
	Porcelain Products Co.
	Murdock Insulator Co.
	N-G-K (Japan)
	Canadian Pottoreys, Ltd. Canada

by H. Scott Blake 
Granada Hills, California