S.I. Howard Glass Military Issue Signal Mirror M34

Military Signal Mirror

This is the Mark 3 emergency signaling mirror made by S.I. Howard Glass Co., Inc. for the US military. It is built to flash reflected sunlight at aircraft, ships or search parties when radio and voice will not reach. The mirror needs no batteries and weighs almost nothing, so it belongs in a survival kit, a bug-out bag, a hunting pack or a boat's ditch bag.

Features

• Mark 3 Emergency Signaling Mirror — The back is printed with the official nomenclature "Mirror, Emergency Signaling, Mark 3," the designation used for the standard military issue signal mirror.
• MIL M 18371E, Type II — It is made to the military's published specification for signal mirrors, not to a maker's own interpretation of one.
• Mesh Sighting Hole — A small aperture with a fine grid in the center lets you look through the mirror and see a bright spot of light, which acts as the aim indicator for putting the flash on your target.
• Printed Signaling Instructions — Four numbered steps in red on the black back explain how to aim the mirror, so anyone can use it under stress without prior training.
• Rounded Rectangular Body — The rounded corners and black edge make it easy to grip and keep it from snagging inside a pocket or pouch.
• Lanyard Hole With Cord — A grommeted hole in one corner carries a white cord, so you can tie the mirror to your gear or wear it around your neck where it cannot be dropped.
• Contract Markings — The manufacturer name and government contract number are printed on the back, confirming it as issued military kit.
• No Power Required — It works only by reflecting sunlight, so there are no batteries to fail or replace.

Built to MIL M 18371E

S.I. Howard Glass Co., Inc. produced this mirror under contract for US forces, and the back carries the Type II designation and contract number SPE8E7-14-V-1908. The printed instructions tell the user to keep sweeping the horizon even when no aircraft or ships are in sight, because mirror flashes may be seen for many miles, even in hazy weather. Collectors and preppers value it because it is the actual mirror built for military survival kits, made to a standard that leaves no doubt about where it came from.