Share your favorites on Show & Tell

National Time Computor

In Office > Calculators > Show & Tell.
Office Antiques568 of 1911Bronze inkwell in the form of a cornRexall Drug Co. Fan
16
Love it
0
Like it

Collectables59Collectables59 loves this.
roddyqroddyq loves this.
betweenthelensbetweenthelens loves this.
bucketheadbuckethead loves this.
ttomtuckerttomtucker loves this.
charmsomeonecharmsomeone loves this.
auraaura loves this.
iggyiggy loves this.
CaperkidCaperkid loves this.
EJW-54EJW-54 loves this.
officialfuelofficialfuel loves this.
TassieDevilTassieDevil loves this.
ho2cultchaho2cultcha loves this.
EfesgirlEfesgirl loves this.
rniedermanrniederman loves this.
See 14 more
Add to collection

    Please create an account, or Log in here

    If you don't have an account, create one here.


    Create a Show & TellReport as inappropriate


    Posted 8 years ago

    americanst…
    (42 items)

    Available some time around 1917, this is a device that is used to determine the number of days from one date to another or to determine the date from a specified number of days from the chosen date. It is mechanical and consists of a main cylinder encased in a metal shell with a smaller dual counter mounted on the outside. It is meant for desk top use and measures in at 9.75"L x 6.75"W x 4.75"H.

    A more in-depth write-up about this item can be found at https://americanstationer.wordpress.com/2013/05/12/the-national-time-computer/ .

    logo
    Calculators
    See all
     Rechargeable HP Calculator Battery Classic CASE HP 35, 45, 55, 65, 67, 80
    Rechargeable HP Calculator Battery...
    $36
    Gummy Wheel Repair Hewlett Packard Calculator HP-65, 67, and HP-97
    Gummy Wheel Repair Hewlett Packard ...
    $5
    Hewlett Packard HP 41C 41CV 41CX Calculator Repair service
    Hewlett Packard HP 41C 41CV 41CX Ca...
    $29
    PX16C a HP-16C Computer Scientist Calculator kit
    PX16C a HP-16C Computer Scientist C...
    $69
    logo
     Rechargeable HP Calculator Battery Classic CASE HP 35, 45, 55, 65, 67, 80
    Rechargeable HP Calculator Battery...
    $36
    See all

    Want to post a comment?

    Create an account or login in order to post a comment.