Here we have a very old and rare Eppley Pyranometer solar radiometer It is used for measuring solar radiation in watts / square meter It has the calibration tag to convert milivolts to watts/square me

 

VINTAGE ANTIQUE DAVIS INSTRUMENT COAL MINE ANEMOMETER ANEMOMETERS Mechanical anemometers are an instrument used to determine the volume of air entering or exiting mine workings. They were invented by

 

Hello up for grabs is a blank prosthetic eye.... Haven't seen a blank piece.... Item is in really nice shape....auction is no reserve.... I won't ship over seas or to Canada.... I combine shipping

 

U.S. FOREST SERVICE COMPASS. MADE BY A.LIETZ CO. SAN FRANCISCO U.S.A. IT SEEMS TO WORK FINE. IT HAS A SERIAL# EQ416. OR IT COULD BE THE NUMBER TO WHOM IT WAS ISSUED? I AM NOT REAL SURE . THE FACE IS M

 

GREAT FOR MANCAVE OR DEN DECO. PUT A HANDLE ON IT AND USE IT.

 

DESCRIPTION AN INTERESTING OLD ITEM. CONDITION THIS ITEM IS USED SO BIDDERS SHOULD EXPECT WEAR APPROPRIATE WITH AGE AND USE. SIZE / SCALE PICTURED BY RULER WITH CM SCALE & A UK PENNY TO HELP SHOW

 

Drawing Instrument Set with Slide Rule, Flexible Curves and Compass all in Original Boxes Here is a fascinating set of 4 drawing instruments comprising of; · Simplon Slide Rule in original box togeth

 

Up for auction is a lot of used drafting fountain pens and some nibs. I beleive these were used for drafting, some of the nibs look used, some unused. Some of the markings I can see on the nibs are "E

 

This is a kueffel esser slide ruler with case. It was made in the usa. It is 12" long. Today after I took pictures to list this with the plastic parts above and below the slider part crumbled apart. I

 

vintage hobbyist mini battery run motor (looks to be unused) in orig.box.U.S.A.SHIPPING ONLY ( no shipping outside of U.S.A,) Buyer pays $3.95 S&H (yes shipping has gone up again) (includes tracki