Yes, that's a slide rule in my camera bag. A pocket Keuffel & Esser Log Log Duplex Decitrig. Along with my Gratitude Journal. #sliderule #KeuffelandEsser #Gratitude

Question about a Keuffel & Esser compass/clinometer I am very sorry that I cannot post the picture of the compass here, but the picture is available at ebay link. you can click on the "See original listing" to see big pictures of the compass....

ICYMI: Question about a Keuffel & Esser compass/clinometer #Surveying #Surveyor #Compass #Clinometer #KeuffelAndEsser

Question about a Keuffel & Esser compass/clinometer I am very sorry that I cannot post the picture of the compass here, but the picture is available at ebay link. you can click on the "See original listing" to see big pictures of the compass....

Question about a Keuffel & Esser compass/clinometer #Surveying #KeuffelAndEsser #Compass #Clinometer #VintageTool