Welcome,offered is an Altimeter Airguide Instrument which indicates changes in air pressure. Comes with original box & instruction sheet & all in in very good condition. Box has a bit of wear

 

For sale are two VINTAGE K&E LEROY AUTOMATIC LETTERING DEVICES with power supply cords and standard lettering font. The power supply cords do not work so I can not check out the machines to see if

 

Partial set. There are parts missing. Please look at the photos closely. I don't know anything about this set, so I'm not sure what parts are not here. Nice wooden box

 

Brown Platignum Fountain Pen Italic Broad Nib Good Condition This is a Brown Platignum Fountain Pen With Italic Broad Nib. It is in Good Condition. I received this pen in a large lot of drafting equip

 

in very good condition kern aarau GKO level ,inverted image to use or to complete your collection in original plastic box has a few cracks (see photo) , instrument is fully serviced and callibrated If

 

Up for auction is a vintage Binary Slide Rule with case and instructions. The slide rule measures 8 and 5/16th inches (not including transparent arm). On the side with 2 arms, it says, "THE BINARY SLI

 

THESE STICKERS NEVER USED AND IN EXCELLENT CONDITION. PLEASE SEE MY OTHER AUCTIONS. I PREFER PAYPAL. Please make payment within 10 days of winning auction ALL ITEMS SOLD AS ISS/H WILL BE 2.50 ONLY NO

 

40 Coal mining stickers

 

DESCRIPTION This is a vintage knife switch mounted on a large piece of slate. The slate base measures about 7" X 6.5" and weighs nearly four pounds. The three copper "knives" are connected to a common

 

This is a vintage, used, Minerva measuring tool in its original box. It is stamped that it is Swiss made.  It measures approximately 4 inches in length and 1.5 inches in diameter.  If you have any q